Missed this yesterday but there is an update for CSS to fix a bit of a funny hack thats out there at the moment.

I was on the Internode servers (de_piranesi) and found a speed-hacking player spitting out hundreds of skulls and various lightsources. Normally I just connect to another server when I see a hack, but this was just too amusing to ignore! I haven't seen a server get owned so badly, with everyone's framerates dropping due to the sheer amount of eyecandy produced.

Just restart Steam for the changes to take affect.