I have mwheeldown set to +jump. It used to work fine but recently it will work a few times but 1 out of 10 times it will lag for about a second or two and then do the jump. I don't really understand why this would happen. It makes no sense to me and I can't seem to fix it with anything. I tried playing with my mouse settings, my sensitivity, and using -noforceparms, -noforcespd, and -noforcemaccel (They may be spelled wrong, I found them somewhere). None of it seems to fix it. Also, it only seems to happen either with other players or on a game in a remote server. If I create my own server it works fine the whole time. I really don't understand

Does anyone here know anything I could try?

Thanks,
beta

Those settigns are for mouse movement. the mousewheel is treated no differently then any other key/button.

It is a wireless mouse? (replace the batteries if so)
However with you sayign that it only happens in online games (fine when testing on a listen server), it sounds like lag.

use net_graph 3 to look at your network statistics.

Ping around 200 (or some odd) is fine
Choke and Loss above 0 are problems however....

It was a problem with my mouse drivers, heh. All fixed now