lag in half-life

[fizbanco18]

Hi all,
I have a 1.33 gh athlon with a geforce 2 mx400. The problem seems to be that I seem to have a lag after I move the mouse while I play this game. It goes away when I switch to software acceleration in the game. Could someone tell me why this happens?
Thanks,
fizban

 

[Compellor]

Check the in-game menu for mouse controls. Find the "Smooth Mouse" check box and make sure it's selected.