I updated the forum to the latest version this week. In doing so, some of the themes got a little messed up. If you're using the default Red theme then things should be OK. A few folks were using the Silver or Orange themes and were unable to log in. I've set up the forum now so that everyone is forced to use the Red theme. Those of you who wish to use one of the other themes will need to go to your profile and re select that theme. You won't see any change until I unlock the forum from the current Red theme. I'll give folks a week or so before I do that. I just want to make sure everyone has a chance to get their themes straightened out.
Sorry for the inconvenience,