A user seemed to have a corrupt OST file which was causing a resource hit on our Exchange server, so we disabled MAPI on his Exchange 2007 mailbox whilst we could get someone out there to recreate the OST.
This was done about an hour ago and we re-enabled MAPI, but it stil didnt work. It actually took just under 2 hours to take effect.
I don't think it's AD replication, since this is not an AD replicated attributed. Does anyone know why it took so long?