I've had a few bugs with 4v2:

infinite loop; no clue what triggerd this but at one point i hit next turn; hour class came up; I waited about 5 minutes while I web browsed (machine is a sb 2500k and turns normally take a few seconds); brought up task manager; saw one of cpu at 100% and killed the game.

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occasional crashes when I reload a game (not nearly as bad as 4v1; but it does still happen

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I captured a tower from an enemy; then signed a peace treaty; then was stuck in the tower and had to exit/reload the game to get out.

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graphics for archer/mages a bit weird; a lot of times I will fire a shot; the graphics will have it go at 45% out of the screen; then a few seconds later it will come back in and hit the target (seems kind of weird to me; btw I have an ati 6950)

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when a town has a Z; the turn will wait for me to either hit end turn or queue something up to build; as soon as I queue the first item it will immediately exit the build screen and end the turn (ok this is more of a feature). I think it should let me finish managing the city before moving on.

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I still get a stray click problem when i exit certain windows (like a click has been registed; but blocked by the open window and then executed when the window closes; which causes sometime undesired things to be done)