Not using my nornal computer, Firefox 5.0.1, while posting replies to the forum, and sometimes going to a new forum, I get:

400 Bad Request Your browser sent a request that this server could not undertand.

Not quite sure what's up with that. I got that posting to the testing forum, and also posting to the InDesign General forum. I even got it just navigating to the Testing forum. In 2/3 cases, the post went through. In one case, it did not. (And hitting Back took me back to a blank page where my post was lost, argh!).

Not sure if this is a new forum problem or somehow specific to this machine/browser, but I kind of doubt the latter. Anyhow, throwing it out there.