No mine fairly quiet sitting around 0.2 to 4%. You got indexing active at that time? No scanning or torrenting happening?
Indexing is turned off. It is actually a very bog stardard installation with a 3TB disk acting as an iTunes host and photo storage.
mcshield.exe consumes cpu with no user tasks running.
Idle for me runs between 1% - 25%
Is this mcshield or on access scanner? You could call support and get them to have a look at your setup. OK on access scanner uses a lot of memory (this will reduce soon I have been told) but high cpu has not been common recently unless you are on a P4 single core cpu with low ram amount.
I would call them and if they stumped ask for an escalation call back.
If all this does not help post your SR job numbers here and I will get a higher tech to call/look into it..
When you uninstalled did you follow
ie use windows removal and MCPR removal too?
Also would be good to run
and reinstall from your account
This could be because of other activities [Like windows update etc] that might be happening on you machine.