Does Microsoft sp2 block yahoo instant messenger?

My instant messenger will not come up and I've recently installed SP2 after great reluctance to do so. I've not found where or how to manipulate the microsoft firewall or even if it can be done.

Does Microsoft sp2 block yahoo instant messenger?agv

No it doesnt block it,but you might aswell just download the messenger again all your contacts will appear as soon as you sign in.

Does Microsoft sp2 block yahoo instant messenger?antivirus software

yahoo messenger was down yesterday and in some areas it might still be down. I have sp2 installed and messenger works fine here. Be patient the yahoo people are working on it.
here is a WARNING!!! to every1 wishing to use SP2..

DO NOT INSTALL SP2 UNTIL U'VE CLEANED UR SYSTEM FOR VIRUSES, SPYWARES OR ADWARES

got it? the sp2 has some sorta builtin system to remove or block viruses. in a result all the applications or files which r infected by even a small virus will either get blocked or get corrupted bcuz of its trail to repair the file.. so here's what u gotta do.. install a good anti-virus (say norton or mc'afee) update its virus defination files, go to safe mode n scan ur whole system for viruses.. ofcourse some files will bcum un-useful bcuz of the viruses, ur yahoo might get deleted or corrupted but the next time u install it, it wont create any problems again..
Alot of people have been having problems with messenger this whole weekend. Mine didnt work most of Saturday. It came back on sunday morning at 5AM. Also problems with yahoo mail.