I had some problems with an older version of MSIE, but I don't remember which version. However, I found out that on IE for Mac (the latest version, 4 something I think) the browser didn't even store my cookie in the first play, which was very disconcerting because that means that the login didn't work in that browser. Very odd problem, although that was the only case in which I have had that problem.

r. j o s e p h
"Violence is a last resort of the incompetent" - Salvor Hardin, Foundation by Issac Asimov