i cancelled mcafee many months ago. installed avast every thing is good but.i didn't manually uninstall any thing from the previous mcafee instalation. of course i'm not paying for mcafee but i still get updates.it still in the services window and most is on automatic.it still pops up awarning window in the lower right about a website that might be bad.it shows up in the task manager at 2'984k.it's still in programs>mcafee>agent. is this still using cpu and should i uninstall it ?