Microsoft released Rollup 1 for Exchange Server 2010 SP1 that fixes the following things.
2028967 Event ID 3022 is logged and you still cannot replicate a public folder from one Exchange Server 2010 server to another
2251610 The email address of a user is updated unexpectedly after you run the Update-Recipient cmdlet on an Exchange Server 2010 server
978292 An IMAP4 client cannot send an email message that has a large attachment in a mixed Exchange Server 2010 and Exchange Server 2003 environment
982004 Exchange Server 2010 users cannot access the public folder
983549 Exchange Server 2010 removes the sender’s email address from the recipient list in a redirected email message
983492 You cannot view updated content of an Exchange Server 2010 public folder
Download Rollup 1 for Exchange Server 2010 SP1 HERE