I got this machine about two weeks ago and it has been working for me to test/install Linux distros. Guess I have used the optical drive for 10+ times. Just used it to burn CD once very recently. Now somehow it does not load CD's (Ubuntu boot CD's as well as music CD's). It does load DVD's though (Mandriva's new boot DVD is fine). It is also the same in Vista on the machine. I don't know if the burning caused the problem. But last time it worked was actually for re-installing Jaunty 64bits and it finished fine. I searched the net and saw some similar reports, but haven't seen any clear solutions. I think I will call Dell, but that may be a lengthy fix, so I wonder if anyone here can provide some insights in the mean time.

Many thanks.