This problem seemed to have started to happen with arrival of the 804 beta update I think. Not sure when it started happening or for why, but the game will eventually just exit to desktop and close the game causing me to lose my progress. It has happened in-game, as well as during faction creation. It seems to happen after a set period of time. Usually within...20-30 mins approx.
Could it be a memory leak of sorts? Or perhaps could be a program interfering with the game (Rainmeter, Anti-virus, etc...). Again though, it seems to happen after a set period of time both in and out (as in the menu screen) of a game.
Anyways, here are my specs.
Windows 7 64-bit
4GB of RAM
Nvidia GTX 260 Black Edition
Intel Q6600 @ 2.7ghz quadcore.
All drivers are up to date.