Can't browse to ibm.com websites with W700

[Robertf]

I have a very strange issue with my W700. I cannot browse to any ibm.com sites. I've tried with IE7/8, Opera, Firefox and Safari.
Checked proxy settings(nothing there) and HOST file(nothing there either).
I have not had problems with any other website.

I work as a technician on IBM servers, so this issue kind of sucks, since I can't get into the Support site with this computer.

Has anyone encountered this issue or know how to reslove it?

Thanks all!

EDIT:
Running Vista all patched up.

[Harryc]

Try disabling IPV6 or possibly lowering your MTU.

For IPV6 it's a quick registry hack;
http://blog.tiensivu.com/aaron/archives ... -can..html

For MTU it's a tad more complicated, but not really;
http://www.kitz.co.uk/adsl/vistaMTU.htm

How to calculate optimal MTU -
http://www.kitz.co.uk/adsl/MTU2.htm

[Robertf]

Hi,

Tries both things, didn't work.

[Robertf]

Anyone else?

[Harryc]

Are you behind a proxy server or firewall? Have you asked the company or campus site Admin about it? Have you tried the machine outside of this proxy/firewalled environment? Find a local WiFi hot-spot.

[Robertf]

We don't use any proxies, and I have tried my computer at several sites. I have also tried other computers at the same site, and they work fine.

[Marin85]

A few points:
1. Firewall settings (very unlikely though, since the issue is with only one site)
2. Any programs like PeerGuardian (it blocks IBM sites per default), HideIP etc
3. Scan for malware -> Spybot S&D + Malwarebytes
4. Any additional software installed that could mess up with network/internet (worth a try)

Marin