It seems that since I've upgraded to McAfee 7 that my PC doesn't shutdown or restart, it just sits at the blue screen that says "shutting down" and I have to manually press to button to power off or reboot. I had McAfee 6 and Firewall 3 running prior and was vigilant about keeping the definition files updated, to my knowledge there's never been on a virus on this PC. And my newest problem is that Mozilla no longer starts up when I click on the icon. However, IE works no problem but Mozilla used to be my default browswer. My PC is also very sluggish since the upgrade. A thorough virus scan produced no results...anyone know what's going on?

disable Mcafee & then try Mozilla. It Mozilla works & the PC isn't slow, then the problem is in Mcafee. It the problem doesn't change, it is something else. Disconnect your Internet connection before disabling Mcafee.

I disabled McAfee and still the same problem. I first want to be able to get my PC to shutdown, I hate having to power down "abnormally" and then go through system check everytime. Also when I try to start up mozilla i see teh splash screen for a split second before it disappears. Another point is I have the IE default blank but it got changed to this address below: http://best-search.cc/index.php?v=6&aff=3188149 so I changed it back to blank and when i turned of McAfee it defaulted back to this page...not sure if that makes a difference? Can anyone help me out at all?

you got hijacked. try coolwebshredder. macafee & a firewall will protect you from some malware, but not all.