Connection Problem :)

When i start counter-strike, i can see all my favourites, after i've played for a while lets say 10 min, and refresh my favourites it only shows like 2/20 or even 0. plus i can't connect to some servers, i just hangs in "Connecting to server"

I've tried to reinstall the game, delete the cs folder. I don't know what more to do, i've tried to google, read on this forum, but nothing seems to fit my problem :).

Help please

Didn't work since i don't use a router, i use a cable from my netstation directly plugged into my computer