Full Page File & 100% CPU!!!

[crazyfool]

hey guys,
Okay my problem is that for no apparent reason my xp installation uses up the entire page file within about 10 mins of being on and not doing anything than web browsing. Also i have realised that my cpu usage is almost constantly as 25% and as I am on a quad core system this represents one core maxed out to 100%. I also have 4gb ram which shows as having 2.2/3.4gb free. The thing i am thinking is virus but the process using the most processor time is CCSVCHST.EXE and is a system file so cant be terminated. I'm running a virus scan now but i doubt it will find anything. Any suggestions?

*Edit: Okay well i'm stupid... 25% usage because i was running the norton scan... *idiot*... but something is still eating up my page file... and it isn't that

[TheAnimus]

often this is something to do with Symantec (norton) firewall products.

Do you have anything of theirs installed?

If not it can be nasty software.

[Apex]

High CPU Usage - ccSvcHst.exe - Windows

Computing.Net - Problems with ccSvcHst.exe

CCsvchst.exe error message during shutdown .. - CNET Spyware, viruses, & security Forums

Memory Leak in CCSVCHST.EXE (Norton Internet Security 2008) - dslreports.com

ccSvcHst.exe - what exactly does it do? (General technical issues)