phr111,
See the thing is, Memorex switches contract manufacturing companies based on bids from the manufacturers (as does Maxell, TDK and Sony +R >but, to be fair, I hear the -R Sony 1x-8x are consistantly good). And other store shelf brands do this too. So your local store may have an ordered supply-lot of O.K. Memorex media which you buy for a while, even for a long while depending on how much inventory the store's warehouse orders. Then they get their next shipment but this batch of Memorex media has been made by a different manufacturer, maybe in a different country and it's specs, characteristics and compatibilities have changed even though the packaging of the disk spindle looks exactly the same.

Also, there have been postings on cdf of Memorex media that worked at the time of the backup, but would not play a year later in the same player. The "No Disk" or "Unrecognized Disk" error or the playback is pixellated (checkerboarding as you called it) or jittery or jumps scenes. Degradation or rot due to manufacturing quality.

Rewritable media is poorly recognized by many DVD players. I always felt RW media's "place" was to be read from the same drive that burned the disk, to just pre-test split points, audio tracks or menu fuctions, before doing the real and permenant backup. But not to play or test on standalone player. But I don't even need RW's to test anymore. The whole backup scene has become so easy and dependable now, that I only use RW once in a great while. Like if I'm having trouble with a DVD that has complicated authoring to see if I got the angle title-sets, or infinifilm features to correctly fuction in CloneDVD backups.

Rewritable media fails to be rewritable either quickly or eventually. After the 2cnd burn or maybe the 25th burn. But it fails. Not the whole disk maybe, but sections of the disk are no longer rewritable. Maybe the sections that are causing your glitches. Use -R or +R. Buy "Made in Japan" (the key to quality) by Vervatim or Taiyo Yuden which, in your area(?) maybe you can only order from online stores. It's so cheap these days. Other members may suggest other good brands. These two brands are flawlessly recommended by everyone here. With a good backup rig, you won't have many coasters anyway. And you know your tests are valid.


Very . A dedicated box! Me too. No conflict worries.

http://us.imdb.com/title/tt0118883/

Merry Christmas,
Whisperer