Can't access e-mail via OE

I was opening my e-mail earlier and noticed that the downloading of my default POP3 e-mail through Outlook Express was very slow, so I re-booted without shutting down Outlook Express.
I checked the webmail version of this account and saw that there were two 6.5mb files which I deleted.
Now I can't get back into the default e-mail account via OE as it doesn't seem to recognise my username and password which are correct.

Are there any settings I can check to see why I cannot enter?

 

It's OK now.
I just continued trying to fix it by typing and re-typing the password and on the 12th attempt, it just worked and let me in.
I really have no idea what happened.