I've got lots of problems with my pc at the mo,not to mention my HD,but the pc went nuts last night,while I was playing a cd.All of a sudden it froze,task manager came up about 15 mins later,and the only program that was taking alot of the cpu was "gcasServ.exe".Have looked today and it seems that this is part of Microsoft Antispyware,but surely it shouldn't take over like it did last night,or as discussed in my other post,is it because my HD is dying. Pc has been ok today.....SB23
if its not infected with spyware or viruses,it sounds like a basic crash on your system, if the pc restarts and runs ok, then yes its crashed, it could well be your cd drive failing which has caused the problem, this can cause all sorts of weird problems, one i had caused yahoo messenger to crash although everthing else was fine! strange but true.
i wouldn't trust m'soft to get anything right after service pack 2 for xp, try uninstalling antispy and loading up "Spybot search and destroy" which is free.