The Ravinale Swordsmen cause the Mac/Linux version to hang when they attack or counterattack. I can't get past the 5th battle of the 2nd league for now due to this bug. I saw it mentioned on the old forums, but I guess there isn't any resolution at the moment. I am running it on Mac OS X 10.6.5. I get the text for the attack and then the game just hangs.
I've heard this reported before. Don't worry--I'm looking into it!
All right, the problem has been fixed. The Mac/Linux game file is back online and better than ever. Go forth and re-download. ;)