Action Quake2 version 1.0c includes the following:

 *    Lasersight in DM fixed
 *    Killing people in observer mode in Teamplay fixed
 *    Crashbugs related to radio usage fixed
 *    Memory corruption related to radio usage fixed
 *    Knifes only option (noguns 1) now works in teamplay.. no weapon or item selection will appear.
 *    Item select menu appearing when switching chase camera modes should be fixed.
 *    Grenades and Knifes surviving round switches if thrown just before the round ends fixed.
 *    Floating with leg damage bug fixed
 *    Not a bug but it's unrealistic to hear a sound when picking up ammo/weapons.. removed.
 *    More things I'm forgetting