That's really weird, I have just this second been googling that. I normally run Firefox and I'm pretty sure it's a) to do with a conflict with Explorer and b) 'busy server' issues. I loaded up Explorer, did a little 'test surf' then tried MSN and ...bingo.
Thank you both, but I am sure you will agree, another-view that no one would put their log in and password on a site like this, despite the fact that you are probably a very genuine person. My son, who works in IT, says that you shouldn't store your password, but put it in every time. There is some funny querk in Microsoft. It has worked for me!!