I have one domain workstation that Outlook 2010 will stop responding when: the user tries to move emails from the inbox to a .pst folder. the .pst folder is located on the SAN. I just tested the move. moving 5 emails to the .pst file took about 5 minutes.
We are using Exchange 2010 and server 2008 DC's
event id 27 outlook oab download failed. this is a warning in the event viewer