The falling thing kind of reminds me of Grand Theft Auto: Vice City. Not that this has anything to do with the subject, but sometimes when your running around, you'll take like 5-10 damage for no good reason...as if you fell
Anyhow, even some of the most reputable servers have the falling bug, so don't worry much about it. Sometimes it's kinda cool to watch the ground far below as it rapidly approaches you...and then *THUD!!!!* 20,000 points of damage....that's always a fun thing to do.