Well originally I was going to suggest resetting teh firewall to defaults but any work on the firewall you say freezes it.
You say you have 2010 and I assume not from Mcafee as all direct Mcafee subscribers are on 2011 version. So you got it from who?
First ensure you can access your download from the Partner who supplied Mcafee
I would uninstall but follow this method here
reboot and run the MCPR tool to clean up what the windows removal missed.
Reboot and run
Then reinstall from your account.
THANK YOU TONY!!!!!!!
It worked and we have all our browsers back!!!!!!! Thank you so much!!!!!!