Problem after upgrade

[ZiNgA BuRgA]

In that case, I'm guessing that you've attempted to upgrade at least twice, where it botched up the first time.

Okay, check if your forums table has a column/field named xthreads_force_postlayout.  If it does, then delete the xthreads_settingoverrides field from the forums table.
Otherwise, you've potentially got more problems.