Vista - Windows Live Messenger- Version 2008

The last 3 or 4 days or so i have not been able to sign into my messenger. I
have sat here for over an hour and all it does is give me pop-up windows that
say msn could not start a conversation with (for example) john doe at this
time please try again later. I click ok and it closes but it still does not
sign in. msn messenger only does this with my one hotmail account. All my
other hotmail and my one live account all work perfectly in messenger. Does
anyone know what is going on?. If you have any comments or answers or
sugestions please e-mail me at poison_ivy_22@xxxxxx as i do not have access
a computer all the time it will be easier for me to just check my e-mail
quickly instead of having to sign in here there and everywhere. Thank you.