Does anyone have problems with logging out while you click on some post? I'm not sure if it is Firefox 5 bug or this forum.

That has happened to me once in the last few days as well, Rogue30. I'm using Firefox 5 as my browser as well.

It is the forum, happens to me constantly. FF and Chrome

Despite the fact that it is slightly better than when it first started, this forum remains the WORST I have ever used. What annoys me is that there are different addresses for forum pages depending on whether you are logged in or not. If I just auto-complete from history, I often end up at the version of the page where I am not logged in and then I have to navigate back to the thread again to reply (because logging in takes me back to the welcome screen for the forums).