[Samba] User profile service hangs, very slow logon after profile migration

[Mathias Hablützel]

Hi,

The DC is a Samba 3.4.5 on OpenBSD. After a migration from Windows 2003 
server with XP clients to 2008r2 server with Win7Pro clients the logon 
procedure hangs for at least 30 secs up to 30min with the message "User 
profile service ..." on every machine regardless if they logon on a 
local computer on the domain or to a terminalserver (win2008r2).

Now, for testing purposes I created a new profile and voilà: This runs 
smoothly and fast. The logon is under 2 seconds.

I compared this with a profile which was migrated and clearly has to 
entry on the samba server: <username>/ and <username>.V2/
My new profile only exists as: <mynewprofile>.V2/

Both are around the same size (20mb), the network connection is a stable 
100mbit ethernet wiring, the load of the samba server is negligible etc. 
So no bottleneck here so far.

Is it possible that the migrated profiles are the source of the 
slowness? Is there any other solution than deleting and re-creating all 
profiles?

thank you for your help
Mathias