Last nite, my Samsung SH-S203N Dvd-writter starts to behave in a really weird way:

Every time I open the disk tray, it closes itself automatically in couple of seconds, and even when I manage to get a blank DVD into the tray; either Nero freezes or the writing process is interrupted in less than a min.

Then I went to the retailer to get a 203P as a replacement. This time, I even had problem getting the DVD-drive recognized by the P5K-P. After pluging-unpluging the sata cable for like a million times, I finally install the 203P, but same Nero freeze/writing failures occurred. Anyone has a similar problem? BTW, the drive was fine, for the first few months that I used it, this just happened last night.

I am on 0204 Bios and I my Samsung hard drive (the notorious 500GB T166) are running smoothly on Sata Raid 0 in Vista.