90% of the websites wont work

[Win7User512]

Hi folks,

i just installed windows 7 build 7068.winmain.090321-1322 and have this
wierd problem, 90% of the websites i try to visit wont work. all the google
services work, google, gmail, google maps etc, this forum works and some
other sites aswell. but websites like microsoft.com, digg.com, yahoo.com
and loads of others websites wont work, i dont even get a response when
i ping the websites.

i tried IE8 and Firefox 3.0 bot it makes no difference atall, tried another dns
server, but still no result ;_;

does someone know how to fix it ?

Using a router? If so, what brand, model?

 

[bdejong]

Thomson SpeedTouch 780WL(i), and that is/was also the problem. I flashed it with different firmware versions and got different results everytime. i bought me a
Sitecom 300N XR router & PCI card and all works perfectly now.

 

[bibbo]

what worked for me

i know i had that same problem and i fixed it by setting my MTU and enforcing the use of that MTU value through my routers settings. You can visit speedguide.net and use their tcp/ip analyzer to check for MTU value recommendations