NVidia Doesn't Play Nice With Half-Life 2
Sevn writes "Apparently, there's a hardware anti-aliasing bug in many new graphics cards that's surfaced in relation to Half-Life2. The details are on a forum post at HalfLife2.net. It seems that many ATI cards will be able to work around the problem, but nVidia users may not be able to. Here is a link to the original X-bit Labs story." The X-Bit Labs article explains further, citing issues with "...Full-Scene Anti-Aliasing, a popular feature that dramatically improves image quality in games... This is a problem for any application that packs small textures into larger textures. The small textures will bleed into each other if you have multi-sample FSAA enabled [in DirectX 9.0]."
...just rename the half-life2 executable to something else
"When a ball dreams, it dreams it's a frisbee"
It would be wise of Valve, I think, to put all necessary resources into getting a fix for this. Since it's probably a bad idea to release a game that doesn't play well with the most popular graphics card.
Philip Sandifer's academic website