Thanks Sam. ATI probably did this by accident, but it's good to know that these drivers may help.

No doubt, there's no way it was their intention to fix graphic glitches in an 11-year old game, though I'm thankful for it nonetheless. I just hope it'll work for others as it did for me.

And I forgot to mention in my previous post - thanks a lot for you widescreen UI, ghostdog. It's a joy to play PS:T with it.

Hey guys, even though I've been lurking here for quite some time, I basically registered now just to tell you about my solution.
I had DDraw problems with PST ("black boxes") like the majority of players here. I tried every possible solution I could think of, and even some I knew in advance to be pointless. Just yesterday, I finally gave up and began preparing myself to somehow endure looking at the damn glitches everytime I cast a spell. Then I noticed new Catalyst drivers had been released (10.6 - just two days old). Believe it or not, those new drivers fixed it.

So if you have an ATI card (mine is an old HD2600XT), this may help you too - no lowering down the hardware acceleration (which I couldn't try anyway, as I'm on Win 7), no third-party fixes. Just the drivers and everything works fine.

Oh, and my setup:
2CD version of Torment
Platter's fixpack
Widescreen mod (1280x720)
ghostdog's UI mod

Thank you for your attention, I hope you were able to understand my clumsy English.