[Samba] Roaming Profile files remain locked after logout/shutdown

[SMITH Gregory C.]

Our floater secretaries roam around the office constantly. Recently they've
complained that they only get a temporary profile and a warning that their
romaing profile is unavailable when they move from one station to another
within a few minutes.

Looking into this I found that files in their profile remain locked after
they had logged out and even shut down the workstation they were on.  I
watched them log out cleanly so it's not a luser problem.

Is this a timeout or network issue?