Yahoo Groups Problem

It must be a coincidence, and will sound like a dumb newbie question, but since installing SpywareBlaster, access to the Yahoo Groups I have is tempermental at best, and not just with IE, Netscape too. Freezes when clicking on a page, hitting reload sometimes works, sometimes not, difficulties getting into Chat.

Also, more troubles than usual last night playing an online game between friends (by inserting the host IP, not through anything like GameSpy), multiple crashes to desktop.

And Norton LiveUpdate keeps installing the same 75.2 kb definitions update, over and over.....

Anyone else notice problems like these?