[Chazy Chaz]

Hi everyone!
There is a problem with internet connection which cannot be explained. In the internet I found a few cases of this problem, but there is no answer. So here is a problem: in Vista any browser doesn't open most of all pages. But browsers find them and wait for response. Google.comm, Gmail, Yandex.ru and some others still working. Firewall is disabled/uninstalled. I even reinstalled Vista, but problem is the same. Tried to change tcpip autotuning feature in vista - no results. Almost forgotten - all sites and internet resourses are pinged well and tracert works too. I used also KB937168 - nothing. Under XP everything works well. Help me please.
P.S. Sorry for my English. Correct me plase, if I say something wrong