GL_OUT_OF_MEMORY Error

[Matthew Arnold]

Does anyone have any idea why this message would be appearing in my 
UT2004.log file alot? I've got an NVIDIA GeForce FX 5700 with the latest 
drivers installed using kernel 2.6.3.

Log: OpenGL Error: GL_OUT_OF_MEMORY (UOpenGLRenderDevice::Unlock)

I hadn't noticed anything really weird during gameplay. I was mainly 
checking my log to see if the ALSA mic capture stuff was working.

Any ideas?
Matt