The game freezes my system when loading or exiting a battle scenario dialog either before or after a battle. (e.g. Charge the Enemy, selecting prisoners after, or continuing into a fight with man in pub) It does not happen every time, but happens often enough that I cannot play for more than 10 minutes without it happening. It occurs in both DX7 and DX9 mode, with and without loading textures on demand, with and without forced single threading. However, in DX9 mode loading my saved game freezes 90% of the time. My computer well exceeds the minimum requirements with:
AMD 1100T CPU
ATI 6970 2GB GPU
16GB DDR3 2000mhz RAM
Ubuntu Linux 11.04 w/WINE 1.3.8 or WinXP 32bit
Mount and Blade: Warband works quite well on my system. Both titles were purchased from Direct2Drive.