Hello again.

Burned TWO discs with 2.4.1.0 now - the option "DVD+R reserve track" WAS already unchecked after installation (!)

Both discs burned AND VERIFIED fine and are perfectly readable.

Conclusion: Installing 2.4.1.0 over 2.3.2.0 screwed *something* (as every single one burned since then showed the problem), installing 2.3.2.0 over it and then 2.4.1.0 over AGAIN seems to have fixed "it" whatever "it" was.

Reminds me of uTorrent - every version since 1.70beta has a bug where the settings DAT files become corrupted, resulting in all sorts of strange errors. Reverting to an older version and then back to the latest fixes it.

Here's the logs:

; //****************************************\\
; ImgBurn Version 2.4.1.0 - Log
; Friday, 18 April 2008, 08:59:08
; \\****************************************//
;
;
I 08:37:10 ImgBurn Version 2.4.1.0 started!
I 08:37:10 Microsoft Windows Vista Ultimate Edition (6.0, Build 6000)
I 08:37:10 Total Physical Memory: 2,096,064 KB - Available: 1,221,876 KB
I 08:37:10 Initialising SPTI...
I 08:37:10 Searching for SCSI / ATAPI devices...
I 08:37:10 Found 1 DVD-ROM and 1 DVD±RW/RAM!
I 08:37:20 Operation Started!
I 08:37:20 Building Image Tree...
I 08:37:20 Checking Directory Depth...
I 08:37:20 Calculating Totals...
I 08:37:20 Preparing Image...
I 08:37:20 Checking Path Length...
I 08:37:20 Contents: 88 Files, 11 Folders
I 08:37:20 Size: 3,831,677,260 bytes
I 08:37:20 Sectors: 1,871,019
I 08:37:20 Image Size: 3,832,643,584 bytes
I 08:37:20 Image Sectors: 1,871,408
I 08:37:20 Operation Successfully Completed! - Duration: 00:00:00
I 08:37:38 Operation Started!
I 08:37:38 Building Image Tree...
I 08:37:38 Checking Directory Depth...
I 08:37:38 Calculating Totals...
I 08:37:38 Preparing Image...
I 08:37:38 Checking Path Length...
I 08:37:38 Contents: 89 Files, 11 Folders
I 08:37:38 Size: 3,985,297,834 bytes
I 08:37:38 Sectors: 1,946,030
I 08:37:38 Image Size: 3,986,292,736 bytes
I 08:37:38 Image Sectors: 1,946,432
I 08:37:38 Operation Successfully Completed! - Duration: 00:00:00
I 08:37:46 Operation Started!
I 08:37:46 Building Image Tree...
I 08:37:46 Checking Directory Depth...
I 08:37:46 Calculating Totals...
I 08:37:46 Preparing Image...
I 08:37:46 Checking Path Length...
I 08:37:46 Contents: 90 Files, 11 Folders
I 08:37:46 Size: 4,161,103,038 bytes
I 08:37:46 Sectors: 2,031,873
I 08:37:46 Image Size: 4,162,093,056 bytes
I 08:37:46 Image Sectors: 2,032,272
I 08:37:46 Operation Successfully Completed! - Duration: 00:00:00
I 08:37:59 Operation Started!
I 08:37:59 Building Image Tree...
I 08:37:59 Checking Directory Depth...
I 08:37:59 Calculating Totals...
I 08:37:59 Preparing Image...
I 08:38:00 Checking Path Length...
I 08:38:00 Contents: 91 Files, 11 Folders
I 08:38:00 Size: 4,338,169,026 bytes
I 08:38:00 Sectors: 2,118,332
I 08:38:00 Image Size: 4,339,171,328 bytes
I 08:38:00 Image Sectors: 2,118,736
I 08:38:00 Operation Successfully Completed! - Duration: 00:00:00
I 08:38:14 Operation Started!
I 08:38:14 Building Image Tree...
I 08:38:14 Checking Directory Depth...
I 08:38:14 Calculating Totals...
I 08:38:14 Preparing Image...
I 08:38:14 Checking Path Length...
I 08:38:14 Contents: 92 Files, 11 Folders
I 08:38:14 Size: 4,516,598,652 bytes
I 08:38:14 Sectors: 2,205,456
I 08:38:14 Image Size: 4,517,593,088 bytes
I 08:38:14 Image Sectors: 2,205,856
I 08:38:14 Operation Successfully Completed! - Duration: 00:00:00
I 08:38:27 Operation Started!
I 08:38:27 Building Image Tree...
I 08:38:27 Checking Directory Depth...
I 08:38:27 Calculating Totals...
I 08:38:27 Preparing Image...
I 08:38:27 Checking Path Length...
I 08:38:27 Contents: 93 Files, 11 Folders
I 08:38:27 Size: 4,703,203,088 bytes
I 08:38:27 Sectors: 2,296,572
I 08:38:27 Image Size: 4,704,206,848 bytes
I 08:38:27 Image Sectors: 2,296,976
I 08:38:27 Operation Successfully Completed! - Duration: 00:00:00
I 08:38:40 Operation Started!
I 08:38:40 Building Image Tree...
I 08:38:40 Checking Directory Depth...
I 08:38:40 Calculating Totals...
I 08:38:40 Preparing Image...
I 08:38:41 Checking Path Length...
I 08:38:41 Contents: 92 Files, 11 Folders
I 08:38:41 Size: 4,549,582,514 bytes
I 08:38:41 Sectors: 2,221,561
I 08:38:41 Image Size: 4,550,557,696 bytes
I 08:38:41 Image Sectors: 2,221,952
I 08:38:41 Operation Successfully Completed! - Duration: 00:00:00
I 08:45:08 Operation Started!
I 08:45:08 Building Image Tree...
I 08:45:24 Checking Directory Depth...
I 08:45:24 Calculating Totals...
I 08:45:24 Preparing Image...
I 08:45:24 Checking Path Length...
I 08:45:24 Contents: 92 Files, 11 Folders
I 08:45:24 Size: 4,549,582,514 bytes
I 08:45:24 Sectors: 2,221,561
I 08:45:24 Image Size: 4,550,557,696 bytes
I 08:45:24 Image Sectors: 2,221,952
I 08:45:25 Operation Successfully Completed! - Duration: 00:00:17
I 08:45:26 Operation Started!
I 08:45:26 Source File: -==/\/[BUILD IMAGE]\/\==-
I 08:45:26 Source File Sectors: 2,221,952 (MODE1/2048)
I 08:45:26 Source File Size: 4,550,557,696 bytes
I 08:45:26 Source File Volume Identifier: GPN 52 Disc 2
I 08:45:26 Source File Application Identifier: IMGBURN V2.4.1.0 - THE ULTIMATE IMAGE BURNER!
I 08:45:26 Source File Implementation Identifier: ImgBurn
I 08:45:26 Source File File System(s): ISO9660, UDF (1.02)
I 08:45:26 Destination Device: [1:1:0] LITE-ON DVDRW LH-20A1P KL0N (I (ATA)
I 08:45:26 Destination Media Type: DVD+R (Disc ID: MCC-004-00) (Speeds: 2.4x, 4x, 6x, 8x, 12x, 16x)
I 08:45:26 Destination Media Sectors: 2,295,104
I 08:45:26 Write Mode: DVD
I 08:45:26 Write Type: DAO
I 08:45:26 Write Speed: 8x
I 08:45:26 Link Size: Auto
I 08:45:26 Test Mode: No
I 08:45:26 OPC: No
I 08:45:26 BURN-Proof: Enabled
I 08:45:26 Book Type Setting: DVD-ROM
I 08:45:26 Advanced Settings - Force HT: No, Online HT: No, OverSpeed: No, SmartBurn: Yes
I 08:45:26 Filling Buffer... (40 MB)
I 08:45:27 Writing LeadIn...
I 08:46:09 Writing Session 1 of 1... (1 Track, LBA: 0 - 2221951)
I 08:46:09 Writing Track 1 of 1... (MODE1/2048, LBA: 0 - 2221951)
I 08:53:16 Synchronising Cache...
I 08:53:21 Closing Track...
I 08:53:23 Finalising Disc...
I 08:53:40 Image MD5: 8476bd6873dd4af7fc9bd1c1aadbd15c
I 08:53:40 Operation Successfully Completed! - Duration: 00:08:14
I 08:53:40 Average Write Rate: 10,407 KB/s (7.5x) - Maximum Write Rate: 11,381 KB/s (8.2x)
I 08:53:40 Cycling Tray before Verify...
W 08:53:48 Waiting for device to become ready...
I 08:54:00 Device Ready!
I 08:54:01 Operation Started!
I 08:54:01 Source Device: [1:1:0] LITE-ON DVDRW LH-20A1P KL0N (I (ATA)
I 08:54:01 Source Media Type: DVD+R (Book Type: DVD-ROM) (Disc ID: MCC-004-00) (Speeds: 2.4x, 4x, 6x, 8x)
I 08:54:01 Image File: -==/\/[BUILD IMAGE]\/\==-
I 08:54:01 Image File Sectors: 2,221,952 (MODE1/2048)
I 08:54:01 Image File Size: 4,550,557,696 bytes
I 08:54:01 Image File Volume Identifier: GPN 52 Disc 2
I 08:54:01 Image File Application Identifier: IMGBURN V2.4.1.0 - THE ULTIMATE IMAGE BURNER!
I 08:54:01 Image File Implementation Identifier: ImgBurn
I 08:54:01 Image File File System(s): ISO9660, UDF (1.02)
I 08:54:01 Read Speed (Data/Audio): MAX / MAX
I 08:54:01 Verifying Session 1 of 1... (1 Track, LBA: 0 - 2221951)
I 08:54:01 Verifying Track 1 of 1... (MODE1/2048, LBA: 0 - 2221951)
I 08:58:53 Device MD5: 8476bd6873dd4af7fc9bd1c1aadbd15c
I 08:58:53 Image MD5: 8476bd6873dd4af7fc9bd1c1aadbd15c
I 08:58:53 Operation Successfully Completed! - Duration: 00:04:52
I 08:58:53 Average Verify Rate: 15,271 KB/s (11.0x) - Maximum Verify Rate: 22,282 KB/s (16.1x)
I 08:59:06 Close Request Acknowledged
I 08:59:06 Closing Down...
I 08:59:07 Shutting down SPTI...
I 08:59:08 ImgBurn closed!
;
;
; //****************************************\\
; ImgBurn Version 2.4.1.0 - Log
; Friday, 18 April 2008, 08:35:12
; \\****************************************//
;
;
I 08:15:58 ImgBurn Version 2.4.1.0 started!
I 08:15:58 Microsoft Windows Vista Ultimate Edition (6.0, Build 6000)
I 08:15:58 Total Physical Memory: 2,096,064 KB - Available: 1,218,772 KB
I 08:15:58 Initialising SPTI...
I 08:15:58 Searching for SCSI / ATAPI devices...
I 08:15:58 Found 1 DVD-ROM and 1 DVD±RW/RAM!
I 08:17:25 Operation Started!
I 08:17:25 Building Image Tree...
I 08:17:25 Checking Directory Depth...
I 08:17:25 Calculating Totals...
I 08:17:25 Preparing Image...
I 08:17:25 Checking Path Length...
I 08:17:25 Contents: 1 File, 0 Folders
I 08:17:25 Size: 2,768,132,668 bytes
I 08:17:25 Sectors: 1,351,628
I 08:17:25 Image Size: 2,768,699,392 bytes
I 08:17:25 Image Sectors: 1,351,904
I 08:17:25 Operation Successfully Completed! - Duration: 00:00:00
I 08:17:31 Operation Started!
I 08:17:31 Building Image Tree...
I 08:17:31 Checking Directory Depth...
I 08:17:31 Calculating Totals...
I 08:17:31 Preparing Image...
I 08:17:31 Checking Path Length...
I 08:17:31 Contents: 2 Files, 0 Folders
I 08:17:31 Size: 4,192,156,220 bytes
I 08:17:31 Sectors: 2,046,952
I 08:17:31 Image Size: 4,192,731,136 bytes
I 08:17:31 Image Sectors: 2,047,232
I 08:17:31 Operation Successfully Completed! - Duration: 00:00:00
I 08:17:36 Operation Started!
I 08:17:36 Building Image Tree...
I 08:17:36 Checking Directory Depth...
I 08:17:36 Calculating Totals...
I 08:17:36 Preparing Image...
I 08:17:36 Checking Path Length...
I 08:17:36 Contents: 1 File, 0 Folders
I 08:17:36 Size: 2,768,132,668 bytes
I 08:17:36 Sectors: 1,351,628
I 08:17:36 Image Size: 2,768,699,392 bytes
I 08:17:36 Image Sectors: 1,351,904
I 08:17:36 Operation Successfully Completed! - Duration: 00:00:00
I 08:17:52 Operation Started!
I 08:17:52 Building Image Tree...
I 08:17:52 Checking Directory Depth...
I 08:17:52 Calculating Totals...
I 08:17:52 Preparing Image...
I 08:17:52 Checking Path Length...
I 08:17:52 Contents: 2 Files, 0 Folders
I 08:17:52 Size: 3,276,131,180 bytes
I 08:17:52 Sectors: 1,599,675
I 08:17:52 Image Size: 3,276,701,696 bytes
I 08:17:52 Image Sectors: 1,599,952
I 08:17:52 Operation Successfully Completed! - Duration: 00:00:00
I 08:18:05 Operation Started!
I 08:18:05 Building Image Tree...
I 08:18:05 Checking Directory Depth...
I 08:18:05 Calculating Totals...
I 08:18:05 Preparing Image...
I 08:18:06 Checking Path Length...
I 08:18:06 Contents: 3 Files, 0 Folders
I 08:18:06 Size: 3,614,616,897 bytes
I 08:18:06 Sectors: 1,764,952
I 08:18:06 Image Size: 3,615,195,136 bytes
I 08:18:06 Image Sectors: 1,765,232
I 08:18:06 Operation Successfully Completed! - Duration: 00:00:00
I 08:18:13 Operation Started!
I 08:18:13 Building Image Tree...
I 08:18:13 Checking Directory Depth...
I 08:18:13 Calculating Totals...
I 08:18:13 Preparing Image...
I 08:18:13 Checking Path Length...
I 08:18:13 Contents: 4 Files, 0 Folders
I 08:18:13 Size: 3,946,277,086 bytes
I 08:18:13 Sectors: 1,926,896
I 08:18:13 Image Size: 3,946,840,064 bytes
I 08:18:13 Image Sectors: 1,927,168
I 08:18:13 Operation Successfully Completed! - Duration: 00:00:00
I 08:18:23 Operation Started!
I 08:18:23 Building Image Tree...
I 08:18:23 Checking Directory Depth...
I 08:18:23 Calculating Totals...
I 08:18:23 Preparing Image...
I 08:18:23 Checking Path Length...
I 08:18:23 Contents: 5 Files, 0 Folders
I 08:18:23 Size: 4,267,226,120 bytes
I 08:18:23 Sectors: 2,083,610
I 08:18:23 Image Size: 4,267,802,624 bytes
I 08:18:23 Image Sectors: 2,083,888
I 08:18:23 Operation Successfully Completed! - Duration: 00:00:00
I 08:18:47 Operation Started!
I 08:18:47 Building Image Tree...
I 08:18:47 Checking Directory Depth...
I 08:18:47 Calculating Totals...
I 08:18:47 Preparing Image...
I 08:18:47 Checking Path Length...
I 08:18:47 Contents: 6 Files, 0 Folders
I 08:18:47 Size: 4,359,790,464 bytes
I 08:18:47 Sectors: 2,128,808
I 08:18:47 Image Size: 4,360,372,224 bytes
I 08:18:47 Image Sectors: 2,129,088
I 08:18:47 Operation Successfully Completed! - Duration: 00:00:00
I 08:19:05 Operation Started!
I 08:19:05 Building Image Tree...
I 08:19:05 Checking Directory Depth...
I 08:19:05 Calculating Totals...
I 08:19:05 Preparing Image...
I 08:19:05 Checking Path Length...
I 08:19:05 Contents: 7 Files, 0 Folders
I 08:19:05 Size: 4,651,201,246 bytes
I 08:19:05 Sectors: 2,271,099
I 08:19:05 Image Size: 4,651,778,048 bytes
I 08:19:05 Image Sectors: 2,271,376
I 08:19:05 Operation Successfully Completed! - Duration: 00:00:00
I 08:20:50 Operation Started!
I 08:20:50 Building Image Tree...
I 08:21:07 Checking Directory Depth...
I 08:21:07 Calculating Totals...
I 08:21:07 Preparing Image...
I 08:21:07 Checking Path Length...
I 08:21:07 Contents: 7 Files, 0 Folders
I 08:21:07 Size: 4,651,201,246 bytes
I 08:21:07 Sectors: 2,271,099
I 08:21:07 Image Size: 4,651,778,048 bytes
I 08:21:07 Image Sectors: 2,271,376
I 08:21:10 Operation Successfully Completed! - Duration: 00:00:19
I 08:21:10 Operation Started!
I 08:21:10 Source File: -==/\/[BUILD IMAGE]\/\==-
I 08:21:10 Source File Sectors: 2,271,376 (MODE1/2048)
I 08:21:10 Source File Size: 4,651,778,048 bytes
I 08:21:10 Source File Volume Identifier: GPN 52 Disc 1
I 08:21:10 Source File Application Identifier: IMGBURN V2.4.1.0 - THE ULTIMATE IMAGE BURNER!
I 08:21:10 Source File Implementation Identifier: ImgBurn
I 08:21:10 Source File File System(s): ISO9660, UDF (1.02)
I 08:21:10 Destination Device: [1:1:0] LITE-ON DVDRW LH-20A1P KL0N (I (ATA)
I 08:21:10 Destination Media Type: DVD+R (Disc ID: MCC-004-00) (Speeds: 2.4x, 4x, 6x, 8x, 12x, 16x)
I 08:21:10 Destination Media Sectors: 2,295,104
I 08:21:10 Write Mode: DVD
I 08:21:10 Write Type: DAO
I 08:21:10 Write Speed: 8x
I 08:21:10 Link Size: Auto
I 08:21:10 Test Mode: No
I 08:21:10 OPC: No
I 08:21:10 BURN-Proof: Enabled
I 08:21:10 Book Type Setting: DVD-ROM
I 08:21:10 Advanced Settings - Force HT: No, Online HT: No, OverSpeed: No, SmartBurn: Yes
I 08:21:10 Filling Buffer... (40 MB)
I 08:21:12 Writing LeadIn...
I 08:21:53 Writing Session 1 of 1... (1 Track, LBA: 0 - 2271375)
I 08:21:53 Writing Track 1 of 1... (MODE1/2048, LBA: 0 - 2271375)
I 08:29:09 Synchronising Cache...
I 08:29:13 Closing Track...
I 08:29:15 Finalising Disc...
I 08:29:34 Image MD5: 8abaabccc025612799fdf548262b7f11
I 08:29:34 Operation Successfully Completed! - Duration: 00:08:23
I 08:29:34 Average Write Rate: 10,443 KB/s (7.5x) - Maximum Write Rate: 11,359 KB/s (8.2x)
I 08:29:34 Cycling Tray before Verify...
W 08:29:42 Waiting for device to become ready...
I 08:29:53 Device Ready!
I 08:29:53 Operation Started!
I 08:29:53 Source Device: [1:1:0] LITE-ON DVDRW LH-20A1P KL0N (I (ATA)
I 08:29:53 Source Media Type: DVD+R (Book Type: DVD-ROM) (Disc ID: MCC-004-00) (Speeds: 2.4x, 4x, 6x, 8x, 12x, 16x)
I 08:29:53 Image File: -==/\/[BUILD IMAGE]\/\==-
I 08:29:53 Image File Sectors: 2,271,376 (MODE1/2048)
I 08:29:53 Image File Size: 4,651,778,048 bytes
I 08:29:53 Image File Volume Identifier: GPN 52 Disc 1
I 08:29:53 Image File Application Identifier: IMGBURN V2.4.1.0 - THE ULTIMATE IMAGE BURNER!
I 08:29:53 Image File Implementation Identifier: ImgBurn
I 08:29:53 Image File File System(s): ISO9660, UDF (1.02)
I 08:29:53 Read Speed (Data/Audio): MAX / MAX
I 08:29:54 Verifying Session 1 of 1... (1 Track, LBA: 0 - 2271375)
I 08:29:54 Verifying Track 1 of 1... (MODE1/2048, LBA: 0 - 2271375)
I 08:34:58 Device MD5: 8abaabccc025612799fdf548262b7f11
I 08:34:58 Image MD5: 8abaabccc025612799fdf548262b7f11
I 08:34:58 Operation Successfully Completed! - Duration: 00:05:04
I 08:34:58 Average Verify Rate: 14,992 KB/s (10.8x) - Maximum Verify Rate: 22,475 KB/s (16.2x)
I 08:35:11 Close Request Acknowledged
I 08:35:11 Closing Down...
I 08:35:11 Shutting down SPTI...
I 08:35:12 ImgBurn closed!

Still convinced my drive is knackered???

Regards.....

Thanh