I don't think it's the server I'm on. I've been running ubb software, on the same server since may 1998 and I also have the same problem, since installing ubb 6.3.
You post a message or response, and it hangs on the redirect page.
I was going to send a support ticket, only to discover info pop wants all my password info. This is somewhat distrubing. My license expires next month, after owning this software for four year. I'm not going to renew, I'm going to look for a new program. I would rather start from scratch, then to revel my password info. Privacy statement or not. I'm not going to intrust a stranger with this info. you never know who's going to have access to it, and what they might do should they beocme a disgruntled employee.
Just a word of caution.