Error : 800701f8

Hi

I have had Windows Live Messenger running for a while. But over the last 2
months I've been having extensive trouble signing in to it. I keep getting
various error codes,
from:
Signing in to Windows Live Messenger failed because the service is
temporarily unavaliable. Please try again later.
Error Code: 800701f8

to: Sorry we were unable to sign you into Windows Live Messenger at this
time. Please try again later. To let us try and troubleshoot the problem,
click the Troubleshoot button.
Error Code: 80072ee2

Troubleshooting just sends it right through, says all systems are fine and I
should be able to sign in - which I can't!
It just doesn't want to connect. I suspect it is a proxy/firewall issue -
but I don't see how it can be, because, sometimes I am able to sign in!!!!

I have to subject myself to using a web messenger such as iloveim.com - but
this is getting tedious! I find if I've been signed into that for a while,
that I can then sign onto WLM8....

And - why aren't there more questions about people having errors!? I've been
searching Google all day!