I'm fairly sure the drive has no issuse. This is the only burning software that has produced a coaster on this drive. I just ordered a Pioneer DVR-112 to replace it with anyway. I can only surmize that it's ImgBurn since I can't reproduce the problem using NERO. NERO has it's quirky issues, but it has never made a coaster for me. I'm about to start burning some DL media, so I was getting familiar with this software since I heard it was the best for DL.

Now I'm concerned about trashing my DL media. I guess I will just reboot my computer before and after each burn made by ImgBurn, but I was hoping to avoid that PITA.