I know a few people that have run into KB
947360 and especially KB
947391, to the point of looking into a third party PST importation tool.
It is good to know these are fixed.
Update Rollup 2 for Exchange Server 2007 SP1 fixes:
KB
940462 - The public folder store may take several minutes to mount on an Exchange 2007 server
KB
944153 - Exchange Server 2007 does not have Transport Neutral Encapsulation Format (TNEF) capabilities for POP and IMAP protocols
KB
945917 - You receive an error message when you try to access the Microsoft Office Outlook Web Access global address list in a Microsoft Exchange Server 2007 environment
KB
947346 - Exchange Server 2007 mailbox users cannot retrieve the free/busy information for Exchange Server 2003 mailbox users in a large Exchange Server organization that has more than 100 administrative groups
KB 947360 - Error message occurs, and users cannot access the free/busy information after you use the Import-Mailbox cmdlet to import data to a mailbox in Exchange Server 2007 Service Pack 1
KB 947391 - The contents of .pst files are not imported into Exchange Server 2007 mailboxes when you use the Import-Mailbox cmdlet
KB
947451 - A recipient sees unexpected text in the top of an e-mail message that you send in Exchange Server 2007
KB
947458 - The Edgetransport.exe process may crash on an Edge server that is running Exchange Server 2007 Service Pack 1
KB
947551 - The Edgetransport.exe process may crash intermittently on an Exchange Server 2007 Service Pack 1 Edge server
KB
947577 - If you try to connect a mobile device to a mailbox server through a server that is running Exchange Server 2007, the mobile device may be unable to connect
KB
947646 - Event ID 12011 is logged every time that the MSExchangeTransport service starts after you install Exchange Server 2007 Service Pack 1 on a computer that is running the German version of Windows Server 2003
KB
948047 - An event ID 1080 message is logged in the System log every three seconds after you run the Set-ExchangeServer command to set the static domain controllers on an Exchange 2007 cluster node
KB
948297 - The OOF template may be delivered as an attachment in an Exchange 2007 environment when you use the "Reply with Template" option in Microsoft Outlook
KB
948332 - Failover takes a long time to finish in an Exchange Server 2007 cluster continuous replication environment
KB
948374 - The EdgeTransport.exe process crashes intermittently, and event ID 1033 is logged in Exchange Server 2007
KB
948666 - When you try to migrate a mailbox from Exchange Server 2003 to Exchange Server 2007, the Exchange Management Shell may stop responding
KB
948830 - The MSExchangeSyncAppPool application pool crashes on a server that hosts an Exchange Server 2007 Client Access Server role
KB
948831 - A user may be unable to synchronize with an Exchange Server mailbox from a mobile device when a Client Access server has been upgraded to Exchange Server 2007 Service Pack 1
KB
948844 - An exception occurs, and event IDs 4999 and 5000 are logged when you modify the Outlook Web Access user interface
KB
949186 - When you try to run the Restore-mailbox cmdlet on a server that is running Exchange Server 2007, you receive an error message
KB
949193 - The address rewrite agent does not rewrite the address for Out of Office (OOF) messages in Exchange Server 2007
KB
949463 - An exception error is generated after you run a Set-AttachmentfilterListConfig command together with the ExceptionConnectors option on an Exchange 2007 S949463-based server
KB
949541 - You cannot log on to Outlook Web Access Light, and an error message occurs in Exchange Server 2007
KB
949703 - Error message in Outlook when you click the signature icon of a signed e-mail message that an Exchange Server 2007-based Edge server receives: "The digital signature is invalid"
KB
949726 - After you install Exchange Server 2007 Service Pack 1, the Set-ExcecutionPolicy task causes an error message, and event ID 103 is logged
KB
949772 - If you run the "isinteg -dump" command against a dismounted store on a server that is running Exchange Server 2007, the Store.exe process stops unexpectedly
KB
950123 - Error message after you apply Update Rollup 1 for Exchange Server 2007 Service Pack 1 in a Japanese environment: "Public Folder Management Console is not an allowed Snap-in"