I updated the drivers on my notebook's intel 82825/82855 graphics card, and now Worms 4 has issues: random squares of texture are being drawn in the wrong order- instead of being occluded by worms/the world that's between them and the camera, they appear in front.

The game worked fine until now, which is what's really weird.

my specs:
XP sp3
768MB RAM
Intel P4 2.4GHz (single core)
Intel 82825/82855 graphics card 32MB shared