Crash every 2 hours

[Elendae]

I ignored this up until now since the game was running mostly without a hitch, but figured I'd see if there's something I could do about it. I'm running EQ Titanium on Vista on my laptop. Plenty of RAM, ok graphics card, dual-core processor.

I used run 3 instances of EQ on PEQ and don't recall having this issue or it was alot rarer. After about 2 hours of in-game time, give or take a half hour, I will crash and get an EQ error. Half the time I just receive the EQ error message, the other half, my screen goes black for a few minutes and then I'll see the EQ error message. I'd have to assume its a graphics card issue, so I updated my drivers and the issue remains. WinEQ gives me about a half hour to an hour more time in between crashes.

Is this pretty common with the way the emulator is or am I missing something pretty vital?