Problem:
Windows clients unable to see Windows Server 2008 shares when server is powered on after a laptop (with wireless). The server and other client have cabled connections.
Example situation
Laptop powered on (wireless) (L), another client powered on (C), Server powered on (S). C cannot see S but can see L. Turn laptop wireless off, C can see S.
Already checked
There are no IP address conflicts. What else can I check / any suggestions as to what may be causing this?
This sounds like possible conflicts with Windows Networking Browse Master elections. The following provides some insights as well as a few tests to determine/troubleshoot - http://support.microsoft.com/kb/188305.