Half Life 2

[Prometheus]

I have a problem with it I may just need to format a bit I dont know

Frequently in game and in CSS it locks up and loops sound for a second sometimes for more than a minute. Rarely it never comes back and i have to manually restart.

I turned on Vsync and now it does it less and for shorter time.

Anyone else having this problem

Specs:

AMD 64 Bit 3000+
10245 DDR 400mhz
Geforce 6800 Ultra 256 MB
Most recent drivers

What is it?