I just upgraded to 8.04 using the alternate CD for the i386 system. I run a dual boot Windows XP and (now) ubuntu 8.04 system. Upon upgrade, the cd drive no longer works in both ubuntu and windows. Hardy itself has a lot of trouble running programs (they become unresponsive about 50% of the time) - thought this may give some clues.

Any ideas? Thankyou in advance.