Happens to me to... But I have noticed that it happens to other players at the same time too! it could be 2 or 20 other players who either drop their weapon, change to pistol, change to nade, change to nade and throw it which killz j00.

Server lag is usually to blame. But it could be another bug which happens rarely. This is v1.11.

P.S.
the code for your sig goes like this
[code:8558a]
[img]http://www.dodstudios.net/uploads/uploads/gpsdok.gif[/img]
[/code:8558a]
just copy and paste the text above
[img]http://www.dodstudios.net/uploads/uploads/gpsdok.gif[/img]

I remember this one... The exact cause for it was never found but it happens when one particular player on the server dies.

For the entire duration that they are in 'dead' mode (Ie, not spectator and not playing, just imobile on the floor waiting to restart) the rest of the server will suddenly lose control of themselves.

This includes laggy movement, or none at all, dropping and switching weapons and firing randomly.

It is a bug that is no longer with us 1.11 users (or so I believe) so to get rid of it upgrade.

Failing that, by pressing TAB (or whatever key you have set to Scoreboard) will clear this bug but only temporarily.

Each and everytime that person dies they will cause this bug until a) They leave the server, or b) The server restarts (that includes a map change).

Next time this happens to you check who last died and then see if they cause it to happen again (upon dying). My only suggestion is to request politely that they leave and come back.

Remember this... Because this bug happens when they are dead they will have no idea they are causing this bug (Indeed I imagine that perhaps at any given time I could have caused it, too, without knowing).

So, don't expect them to cooperate with your requests.

By the way... Upgrade.