Yup, happened for me too, the forum was in accessible after I opened that thread and clicked "new posts", @ico provided a solution of disconnecting and coming back, not sure whats going on.
I went in. I navigated couple of pages. I remained there for few min. And then got the hell out.
Nothing happened.
Looks, like it's a big "placebo" effect.
Okay, so now the bug has changed for me. The full thread does not load, and the forum times out after sujoyp's post, which I've been trying to respond to for ages now, loads. The remaining posts do not load for me anymore.