Internet Explorer 6:
Download IERegFix.bat and save it to your desktop:
Locate IERegFix.bat on your desktop and double-click to launch.
Once launched, you will be presented with press any key to continue. To execute, press any key on your keyboard.
NOTE: This may take several minutes to complete.
When it has finished, you will see Action complete. Press any key to close. Press any key on your keyboard to close the IERegFix.bat.
Open McAfee SecurityCenter to see if the problem still persists.
Internet Explorer 7 and 8:
Reset IE7 settings: http://support.microsoft.com/kb/923737