IE issue
Having trouble logging in, using Internet Explorer? Try deleting your cookies.
Thomas,
I ran into your IE issue on staging.oehive.org. I normally use http://oehive.org, but I also found that I could reproduce the problem with IE when I went to http://www.oehive.org. (Notice the "www" that I don't normally use).
The "www" itself doesn't appear to be the real problem, but I think it did help me reproduce the issue.
I did some searching through drupal.org, and found that this has been a big issue for a lot of people for a long time. Lots of people found lots of different solutions, but a lot of them were for older versions of Drupal, and some of them just didn't look safe to me.
I was able to clear the issue from IE by deleting cookies from IE itself: Tools -> Internet Options -> Delete Cookies.
It's terrible to have a client side solution, but drupal.org doesn't seem to have found a consistent, safe, reliable server side solution yet.
I'll promote this to the front page, in case anybody else has trouble.