Video card issues with EQ2Follow

I have a Gforce ti 4600 video card and recently on EQ2, and only on EQ2, I have been getting various error messages about the drivers, video freezing, and loss of 3D imaging (2D is still drawing just fine). It seems that my card might be overheating. This does not really make any sense honestly since I can run anything else for 12+ hours just fine.
To make it even worse, my wife's system is now doing the same thing. One system I could excuse as a hardware issue but both at the same time really makes me wonder what's going on. Is anyone else having a similar issue with this cards or know if there is some issue with EQ@ and this card? Any help would be appreciated