Just had an odd bug happen. I tried to load two tabs: one with PFRPG General Discussion and one with PFRPG Advice.
I initiated the requests pretty close together (F5, ^TAB, F5), and when I went back to look at them after they'd finished loading, both contained the same post list (that of General Discussion), despite the breadcrumb trail correctly listing them as separate forums. Refreshing the Advice page fixed it.
So far I haven't been able to reproduce it, but let me know if there's any other information I can give you to help track it down.
