how to get this sign off my computer, saying an undesirable program was blocked from my computer
By the way, it's not a good idea to have an email address as a username. The spambots will pick it up in no time and you'll be on every spammer's mailing list from now till eternity. I think you should choose something less emaily, but if you can't change your username yourself we can ask someone to fix it for you.
Peter I changed it to ware.glo an official email from mcafee re this following
First , I have to agree with Hayton. You definitely should never (Publically) post your Email address.
In addition, the following article created by none other than the very Person whom has offered you sound Advice/Assistance (Hayton). Explains how the (Potentially Unwanted Program) ended up on your system:
Wishing you all the Best,
McAfee Volunteer Moderator 1