WiFi problem - No internet / DNS Not working

Hi,
I installed 64bit Windows 7 on my T500, and I'm having problems when connecting to wireless networks.
Everything works fine with wired networks, but when I connect to a wireless network (any wireless network) DNS isnt working.
I can ping and connect to websites using IP, but it refuses to resolve domain names. I have verified that the correct DNS servers are beeing used.
I have installed all the drivers supplied by Lenovos system update + some beta drivers from http://www-307.ibm.com/pc/support/site.wss/WIN7-BE​TA.html, but at this time I'm no longer sure what drivers are beta and whats release.
Software & drivers installed:
Access Connections version 5.42 build 6JC725WW
Realtek 11b/g/m Wireless LAN Mini-PCI Express Adapter II (driver version 2007.2.1103.2009)
Microsoft Virtual WiFi Miniport Adapter (driver version 6.1.7600.16385
Anyone know what this could be?
Thanks,
Trygve
Solved!
Go to Solution.

I have had this happen now on three seperate Lenovo laptops. They are the 4446-25U model. This is the THIRD time that this exact same problem has manifested in this model of laptop. I am in a corporate environment and all systems are joined to the domain.
All are running the XP Pro downgrade. All will ping both internal and external IP addresses, but will not resolve the domain name (neither internal or external). All were working fine, then suddenly began with this issue that I have so far been unable to resolve. I cannot see that any software has been installed to create a Layered Service Provider issue which seems to be the only thing that matches symptoms with what I am seeing according to MS. Previously when the the first laptop did this about 3 mos ago, I restored it using the Vista restore discs, and had to forego the XP Pro downgrade. I didn't have time to tinker with it, so I just restored it with Vista and went on. I have now seen two more inside of a week with exactly the same issue. DNS does not work. DNS services have been stopped and re-started, DNS has been both statically assigned, as well as handled by DHCP, new user account created, all unneccesary software removed, and several other seemingly un-related things changed around to see if anything would work, and I cannot get DNS to resolve names.
If anyone has seen this issue please post here. I think it's odd that this has happened now three times on three seperate laptops of the same model. I've seen screwy DNS problems before, but I think I can remember one or maybe two times in my career that DNS just refused to work for no rhyme or reason, and now I've seen two in a week!!

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