Hey wait a minute lol... You did move this to the verified bugs section... Why did I wake the Necromancer if the reason I bumped it was valid? Oh well .
Anyway, I'm actually playing through it again now, and I'm after the Hall and before the Pyramid, so I'll re-verify if the bug is there and keep a few .srm / .zst files handy.
Ok the bug is still there...sort of. I tried switching to the old graphics engine and it went away, as someone else mentioned happening before. I guess that means it's hardware-related, as I have a new PC from when I first post this up. At present, I have:
AMD Socket AM2 Motherboard
Athlon 4200+ Dual Core
2GB DDR2 400 RAM
GeForce 7600 GS
Windows XP x64 Edition
I'm beat for tonight, but later, I'll try to get those files up if anyone wants to do testing.