If you are sure it is a user context issue, then you should be able to solve this via "impersonation" at runtime. Pretty simple stuff to get a token that represents the context of the user you would prefer to run under to see the mappings. Take a look to the following for a detailed code example on doing this:

WindowsIdentity.Impersonate Method:

http://msdn.microsoft.com/en-us/library/w070t6ka.aspx