Autosaving causes game to freeze indefinitely.

Sometimes, autosaving the game via Ctrl-S causes the game to freeze indefinitely (Shows as Not Responding in the Task Manager).  I don't know whether this is due to a memory leak (It usually only happens after I autosave several times without issue) or because the game is trying to process too many commands at once (It has sometimes happened because I've hit CTRL-S twice in a row, or it's during the enemy's turn).

My specs are:

-Windows XP

-2GB of RAM.

-Quad-core Intel Processor (2.4GHz)

-nVIDIA GeForce 9800GT (Though I doubt it's a graphics issue, there don't seem to be any symptoms of that).

This is my first time submitting a bug report, so if there's some auto-generated error file I can copy/paste, please tell me where I can find it, and I'd be happy to paste it.  Thanks!