We have seen some cases like this one. it could be the router issue. This
link may help.
Vista Internet Access IssuesVista: Can't access some secure web sites ...
don't fix the problem, try to use FireFox because some web sites and coding
may not be compatible with IE 7. ...
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
How to Setup Windows, Network, VPN & Remote Access on
"YaserK" <YaserK@discussions.microsoft.com> wrote in message
>I am experiencing a network problem with my new laptop working with Vista
> Home Basic.
> I have found that some domains refuses to open suddenly after a short time
> of accessing the internet, while domains which were already accessed are
> functioning so good. My ISP's poorly trained technician advised me to
> the router everytime this issue occurs. Actually this helped but made me
> crazy as I had to restart my 3Com router every 5 minutes.
> I tried to change my DNS settings without restarting the router, and this
> solved the issue too, but I still have to switch between DNSes every 5
> This issue is absent with my Desktop that uses Windows XP on the same DSL
> Any solutions?