If that only happens on Vista computer, you may want to check the firmware.
This link may help too.
Vista Internet Access IssuesVista Internet access issues. Dropping Internet
Connection ... Vista: Can't access some secure web sites ... don't fix the
problem, try to use FireFox ...
www.chicagotech.net/vista/vistaieissues.htm
--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
"Georgiev" <Georgiev.2yn3zf@xxxxxx-mx.forums.net> wrote in message
news:Georgiev.2yn3zf@xxxxxx-mx.forums.net...
Quote:
>
> Hello,I reinstalled my Windows and now I'm with Vista x64 (I was with XP
> x86 before).My internet works fine (as you can see 
),but I have one
> problem.I cannot open 2 internet sites.Only 2,but really important for
> me.The sites are working,I'm not banned or something,just when I type
> the address and hit "Enter" it starts loading and then I get this "The
> connection has timed out".I'm using Mozilla Firefox,but the same thing
> happens with IE.What can it be?What can be causing this?It's really
> bad,because if I don't get it fixed somehow I have to go back to XP
> 
So,please if you can help me I'll really apreceate it.Thanks.
>
>
> --
> Georgiev