I have this happen to me a few times now. I have posted a reply to a thread and it just sits there waiting for the page to respond. It never does. I cannot access the website for a while. I cannot access it from another browser or another computer on a different network (we have DSL and a corp network at work). Its like it gets locked. I have been having issues with automatic logins not holding as well, but that seems to come and go. I can access my home page, just not the forum. Its usually down for over 10 mins or so. Not sure what is going on. I am on 1.9.5.6RC1.