How do I get rid of the BETA message I keep getting?

Hi ya! :-) Once a day, for the past 5 days, I keep getting this small message window from BETA that states: System: A user on Windows Live™ (MSN) Messenger wants to add you to his or her Messenger List. To start sharing instant messages, you'll...

The error message says: Yahoo! Mail Beta experienced a login error. Name: TypeError,Messae:Object required, # -2146827864, Description: Object required

I tried system restoration, clicking the trouble login in. Can some please help me this has been going on for 3 weeks nearly.

I am not able tom read my mail at all, it comes with a message that has to do with yahoo beta, If I could mretiurn to the old system I would, I never had a problem then, please I'm am tired of trying over and over again and nothing happens

I was deleting some previous comments off of blogs and this message popped up say unable to process your request try again later error 999. All i was doing was deleting comments, I removed alot of comments before this message popped up. Now I can't get...

i have tried to download updates from windows update and i keep getting an error message 646 what is it and how do i get my updates to download

I am having this problem trying to get my email .I keep getting this message saying webb server temporarity unavailable what is the problem?

When I try to access yahoo pool I keep getting a 'SysFade' message and can't open the site. Can anyone help please?

Daily I get my stock message board blocked by Error 999. This has happened for the past five weeks. Why and how do I stop this. I depend on the stock message board. I had my computer checked it is not me my security is updated and working fine. This...