Norton antivirus hug up the cpu

[pesko]

Hi

I sitting on a Windows Xp norwegian home edition, after installing Nis (Norton Internet Security 2005), there are 3 processes in the task manager their are using all the cpu resources:

Lsass.exe

ccapp.exe Symantec AV

Svchost.exe

I hope that you, can help me before I'm fall to sleep.

-Peter