I seem to be having the same problem..but I can't even log into my desktop. It seems to be freezing up earlier and earlier. The first time happened right after I launched Firefox so I rebooted. Then it froze while I was typing in my password. I rebooted. (The reisub keys weren't responding.) Then it froze before right after the Ubuntu screen appeared. I just installed 10.04 and it seemed to be okay, but the freezing started after I downloaded updates.
I seem to be having the same problem..but I can't even log into my desktop. It seems to be freezing up earlier and earlier. The first time happened right after I launched Firefox so I rebooted. Then it froze while I was typing in my password. I rebooted. (The reisub keys weren't responding.) Then it froze before right after the Ubuntu screen appeared. I just installed 10.04 and it seemed to be okay, but the freezing started after I downloaded updates.