Windows Live Mail Error??? Please Help.

Hello,
I am using Windows Live Mail Destop Beta. I configure four accounts. Two
Hotmail, One Gmail, One Yahoo.
At one of Hotmail adress, I have a lot of folders. When I got a good mail, I
copy that mail to these folders from all of my accounts.
But a few days ago, When I try to move same mails to these folders, this
mail account give error. Now I can't read these mails. They are dissapeared.
But they must be in mailbox. When I start send/receive operation, it gives
errors downloading those mails. I can't enter my inbox from hotmail web page,
too. It is loading loading and gives errors. I reported it more than twice.
I think the problem is technical. Please help me.