What do I do when msn freezes my phone?

I just got a brand new Nokia 7510 four days ago and I've signed on to msn once. Then errors started showing up and now when I try to sign on it freezes. Is there anyway to fix this? I'm having to turn off my phone to get back to the main screen but when I try to sign on again it freezes. Help?

Kotoko1223
February 2009