I cannot uninstall mcafee using 'my computer/uninstall. The screen goes blank and freezes and now I am unable to use the Internet at all having tried to override it with f secure from virgin - which also failed. Please help as I'm going mad!!
Sounds like your system may not be entirely up to date...make sure it is, especially IE, whether or not you use it.
You could try simply running the MCPR cleanup tool and then reboot.
Or contact Technical Support directly by phone or online chat, it's free of charge and linked under Useful Links at the top of this page.