Okay, so I have the official patches, unifinished business, banter and flirt packs. There's been a few bugs, items renaming themselves and changing descritptions to dialouge strings, one or two odd banters with characters that aren't there... but then, suddenly, I arrive in the Government district and Minsc starts to say insane things. And not lovably insane, but nonsensical insane, referring to two characters who aren't in the party, one (Haer'dalis) who I have not yet even encountered in-game. There's lots of nonsensical dialouge choices, one referring to myself as Korgan, another talking as if I'm Sarevok (?!), and the only results I get are Minsc leaving the party, or Minsc's strength suddenly becoming 10 and BOO TURNING INTO A BUNCH OF RED ROCKS (the later option also updates my journal with something like "Fishing is most enjoyable with company")
So... the hell?
The only odd thing I can think of that I might have done to instigate this was accepting Aerie into the party, briefly, then reconsidering and kicking her out. Does the flirt pack not like that sort of thing?