Rollup 2 for Exchange Server 2010

The awaited Rollup fixes amongst other things several POP3 and IMAP issues and an update to Push Notifications. check this link for the rollup.

Update Rollup 2 for Exchange Server 2010 fixes the issues that are described in the following Microsoft Knowledge Base (KB) articles:
977633: Certain third-party IMAP4 clients cannot connect to Exchange Server 2003 mailboxes through an Exchange Server 2010 CAS server
979431: The POP3 service crashes when a user connects to a mailbox through the POP3 protocol and the user is migrated from an Exchange Server 2003 server to an Exchange Server 2010 server
979480: Users cannot receive new messages if they access mailboxes that are moved to another Exchange Server 2010 RU1 server by using IMAP4 clients
979563: Exchange Server 2010 Push Notifications does not work
979566: A 0x85010014 error is generated when linked mailbox users try to synchronize their mailboxes with mobile devices in a CAS-CAS proxying scenario in Exchange Server 2010
980261: This fix introduces the supports for Exchange Server 2010 page patching when a "-1022" disk I/O error is generated
980262: Event ID 2156 is logged on a computer that is running Exchange Server 2010

Regards