I'm using Firefix 5 as my web browser. It's been updating a lot lately, and the last couple times, I've had difficulties logging back into TeaChat.
I was having trouble clicking the "login" button, and I couldn't even click on the name or PW fields. (As in, clicking = nothing; the cursor wouldn't even change on hover-over of the button).
But I think I finally figured out the problem -- for some reason, if the web browser view window is scrolled all the way up, it's okay, and everything works. If I've scrolled down even a notch, then they don't work. Very weird.
Just thought I would pass that oddity along... enjoy!