i too am experiencing the same problems. One thing to add is that i tried running Mandriva's latest distribution as well, and experienced the same exact issues. I reinstalled Fiesty Fawn and i'm still experiencing these lockups. here's my info, maybe it will help find a common thread to all these cases.
Linux tetsuo 2.6.20-15-generic #2 SMP Sun Apr 15 07:36:31 UTC 2007 i686 GNU/Linux
i too am experiencing the same problems. One thing to add is that i tried running Mandriva's latest distribution as well, and experienced the same exact issues. I reinstalled Fiesty Fawn and i'm still experiencing these lockups. here's my info, maybe it will help find a common thread to all these cases.
Linux tetsuo 2.6.20-15-generic #2 SMP Sun Apr 15 07:36:31 UTC 2007 i686 GNU/Linux