That is correct SEN, it is the same bug that you linked to, the problem in fact appeared AFTER updating, the update solved some troubles like very dark places (Unable to see at all) and other minor "glitches" but introduced this very annoying bug.
Caarie, you're correct, I'm using Linux, this are my Hard/Soft specs:
Proc: AMD Athlon 1800+
RAM: 784MB
Video: Nvidia GeForce 6200 256MB Ram
OS: Ubuntu 8.04 (Hardy) Compiz dissabled
Thanks