Can only join a very few MP server

all other server the VAC bar is one bar away from the end and the download is at 0 but I never can connect. Any suggestions?

AMD 9850 x4
Dual 4870’s
Gigabyte Mobo MA790X-DS4
Mushkin 2x2Gb Ram

Mayby its something with your router?

firewall might see the information comming to your computer as an attack. Just turn it off and it should work

Thanks.

Snip