Profile manager and User Home

[Sheridan]

Got a random problem with PM running on Server 5.6 - with a bunch of macs bound to AD and using PM for their profiles. We specifiy in the dock the Users Home should appear, along with a couple of shared folders. Generally this is working fine, and the users see the globe icon to show a network folder. But we have a couple of macs (identical image) that simply show question marks for the shared folders, and completely ignore the Users Home folder and shows nothing.

 

This tends to happen for all users on those macs, those users login to another mac and see their folders correctly. They are identical hardware and indentically imaged so I'm a bit confused as to why these ones simply can't show the mapped folders? Everything else from PM seems to work - proxy settings, backgrounds etc so I know PM is pushing the profile out OK.