I play for somewhere between 50-150 turns, and then I get the "out of memory" error, and it brings up the desktop where I "ok" the message (there by shutting down the game). Also, sometimes the error message won't actually bring up the desktop, at which point I simply control-alt-delete, shut down the game from there.
Debug: https://docs.google.com/Doc?docid=0AWa5fOZceXxVZGZ3cjdtaHpfNDh3N20yamc3&hl=en&authkey=CJv4ybAI
dxdiag: https://docs.google.com/document/edit?id=1hCfgLJWXJtFreQJvfcQNea63BPjLsDmFIVNFKoTSANg&hl=en&authkey=CMGn_7QB
Memory Dump: https://docs.google.com/leaf?id=0B2a5fOZceXxVYjZhMzgyODQtOTg1MC00ZmRlLWIwN2ItYTE1ODJiZTQyMTJj&hl=en&authkey=CL3__5AN
~ModernKnight