We are using GPO to map our drives, this is a strange problem on laptops.

If normal users or administrators login on the local network all the network drives map ok no issues.

If users disconnect from the network and boot up, the drives appear but as unavaliable as you would expect ( all drives apart from one, which is mapped the same way as the others, and to the same server and type of share etc )

If admins disconnect from the network and boot up, all the drives appear but as unavaliable as you would expect.

Is this a known issue, if so is there a fix ? why dont ALL drives show as unavaliable for users ?

I guess you might ask why this is an issue, the reason is we are using VPN and Direct Access and obviously need this to work, as when users connect the drives are unavaliable but when you double click via VPN/ DA they connect up ok.

Make sure you're running your policy synchronously (assuming these are preferences):

http://social.technet.microsoft.com/wiki/contents/articles/12221.troubleshooting-the-drive-maps-preference-extension-in-group-policy-replace-mode-only-maps-the-drive-every-other-logon.aspx#Set_Group_Policy_to_always_run_synchronously

Found the issue.  We had the drives been mapped in Group Policy and it appears there was a drive mapping for this one drive in our login script also, so it looked like there was some sort of conflict.  Removed from the login script and all the drives now appear as offline correctly as they should when not logged into the network as a normal user.