Hey AH, I think I may have found a bug in the Sewers in the tetris room. Please see this thread for a description of my pain viewtopic.php?f=20&t=7203&start=14 which includes a video of my movement.
By all rights it would seem that I have solved the puzzle yet I am not being rewarded. If I'm doing something wrong let me know, but it seems as I got everything correct.
I've uploaded a save game to http://www.thebilbaos.com/grimrock/quicksave.zip if you'd like to try it out. I am using the latest patch you made available earlier this week.
This glitch aside, I'm loving the game. Leaps and bounds above the original and I thought the original was pretty amazing. Thanks.