Thanks for helping find the problem.
What I'm trying to figure out is what specific areas are causing the problem. Knowing the keyboard stops working isn't helpful at all, but if we knew that it works in one area of the site but doesn't work in another area, then I can look at the differences between them and that can help find what is causing this.
If you can't type in both tree mail and the threads, I'd like to know that. If you then go to a different site like gmail and can type there, I'd want to know.
Also, if while this problem persists, if you go to your profile and try to edit your infobox to your profile, that would be quite useful to know.