I have an Exchange 2010 server and am in the process of moving users from the Exchange 2003 server and have started to see problems during the move of users. I see outlook is connected but stuck on "updating this folder" and until I restart the server outlook will not update. I can however see all my mail in outlook web access. I have checked the exchange logs on 2010 and this one pops out
"Mapi session "number" exceeded the maximum of 32 objects of type "session"
I'm not sure if this matters but the mailbox database is on a ISCSI SAN