[JackMonroe]

Played Cal on both 1.6 and Source.  They would never admit it (you know, counter-strike players and their egos) but it pretty much boils down to them having a bad computer most of the time.  Got to love that counter-strike staying power though.  New COD comes out like every 6 months, is on top for a week, then CS takes over again.  Amazing.  Oh and to above, I seem to be able to play 1.6 and CZ just fine on Windows 7.