Cant browse WinXP shares or map printers from Vista over Wireless LAN in 2003 Domain

Hi all.. Im new to this forum and looking for a little assistance with a problem I have been struggling with for a few weeks.

I have Vista Ultimate installed on a media centre. When wired i.e connected to the network via ethernet, all works as expected. I can join my domain, browse network shares, print etc. When the work from wireless, and try to browse the network or print I get a timeout, with and error message saying "I dont have the right permissions to use the resource .. contact your administrator". If I try to access a mapped network drive, the error I get is "This drive no longer exists". The adapter is a Belkin G Desktop Wireless adapter and on the HCL for Vista. I have a Laptop and purchased a Netgear PC Card wireless adapter and am having the same trouble there - so Im convinced its a Vista issue (maybe interoperability with other OS'??).

A Google search seems to indicate im not alone in my frustration, but I have been unable to track down a fix for the problem. Before anyone asks, let me elimiate the usual suspects...

1. I have antivirus disabled on the machines
2. I have even disasbled my routers firewall (for test purposes)
3. I have tried creating identical user/passwords on each machine - although Im sure that did nothing, as the workstations were members of the domain and I was domain admin account to try to connect.
4. I have applied the LLTD patch on both XP workstations
5. I can confirm netbios over TCPIP is enabled
6. The wireless network is set to Private
7. File and Print sharing is enabled on PC's and Media Centre
8. Event logs give me and Event Id 1006 " Unable to authenticate against Active Directory.... " which looks like the source of the problem, but I cant figure whats causing it?!!

Any help would be appreciated.

netfin

 

Here are some references from Microsoft TechNet's Wireless Networking.