Could just be the way it's configured...but the forum at bangshift.com has been a mess since it was upgraded to the new version of vBulletin. I can't remember all the specifics...but attachments are a mess, how you find which threads you've read or replied to seems to be a big mystery now, it doesn't automatically mark where you left off reading after your last visit. I know that it's recieved a bunch of complaints, lots of work with someone from vbulletin to try to fix things, some of which have been fixed, others seem to just not be fixable.
I'm not impressed at all.
The xenforo one I'm on is
HAMB, it has a few little problems that haven't been fixed but generally works well. Attachments are easy to deal with, although it also seems to be missing the thing about automatically remembering where I last read.
I don't know what's around for free, there may be some good things, but I don't seem to be on many forums these days.
One seems to be done with WordPress, and it's not very easy to use.
Most of the world seems to have moved to facebook or something
