Well, I found a bug. I was playing multiplayer, and was running out of time so I tried to quickly put my healer back on the high ground. Unfortunately the time ran out just as I had clicked the ground, so she froze in mid-air. Then a soldier in front of her hit her and killed her. But then the soldier to the left of her hit her as well, even though she had disappeared at that point. That's when the game froze, time, army and everything.
http://img218.imageshack.us/my.php?image=tacticsglitchdd0.jpg
GameBrew, I've come across that bug a few times myself. Just now, it even let me win with 3 enemies left. :p It happens when I click a few times quickly on one of my men to pass his turn.