Ace Fekay [MVP-DS, MCT] replied to Jeff
12-Jan-10 11:20 PM

Then I would try to detune SMB signing on the domain controllers. it is
not recommended due to security, but this may be what is going on. It
was a default change we used to make years ago when 2003 came out.
Please read the following for more info:
Slow performance via Leopard Connection - SMB Connections...
Connecting to the 2000 File server via SMB from OSX Leopard is very
quick, drive mappings work, file copy to and from is ... OSX Leopard to
Windows 2000 Server - 16.8s - Wow! ... Mac's on the other hand are very
slow. ...
http://social.technet.microsoft.com/forums/en-US/winserverfiles/thread/198ed921-e092-46a9-ad37-f6ae708a749e
More info regarding SMB signing:
Overview of Server Message Block signing:
http://support.microsoft.com/kb/887429
How to Shoot Yourself in the Foot with Security, Part 1
http://technet.microsoft.com/en-us/library/cc512612.aspx
Ace
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Ace
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Ace Fekay, MVP, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE
& MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services