i got a video of the q3a lod in action.
feature=youtu.be
how it figures out when to enable lod seems kinda weird. in my video you can see at a one distance it will bounce between the high detail & mid detail model, however, when it's facing me, it goes mid poly, away = high poly. Like it's based on a trace from you to the closes bounding box point, not origin.
also, no matter what res i tried, unless showtris was on, i couldn't tell it was lower poly, like it determines how many polys it shows based on distance and/or resolution, so it's not noticeable.
I've been playing the game since it came out & never even knew it had it until this thread.