Here's what happens if you switch from Vendetta to a DirectFB Console session, then back again:

http://www.roguelazer.com/Bugs/

Crazy! Thankfully, it goes away with a texture reload, but it's still annoying. Vendetta is the only program with this bug. It's not in bzflag, or ut2k3, or tuxracer. Just... Vendetta

Hmm, I guess it's because we don't check to see if the opengl context gets messed up. The opengl driver should auto-fix it for us but apparently not.

I get this when I switch to a terminal while the sector is loading.
Very nasty. Need to jump to another sector solve it.