Any known issue reported for "Rollup 8 for Exchange Server 2010 Service Pack 2"

Question

Hello,
Currently our servers are running with "Exchange 2010 SP2 RU7", we are planning to update the Rollup version to RU8 for SP2.
Is there any knows issues reported for "Rollup 8 for Exchange Server 2010 Service Pack 2" till now ? is it safe to update the RU8 ?
http://www.microsoft.com/en-us/download/details.aspx?id=41394

Answer 1

(1)  I had to roll it back:
The rollup released Tuesday the 9th caused random problems with systems ranging from general slow down to operation failed errors.  It didn’t impact everyone at once and seemed to take 48hrs for everyone to have a problem.  Rolling
back the update and rebooting the server seemed to resolve the issue.
Issues reported before the general mailflow stopping for everyone:
Nothing major … an occasional operation failed when I hit send but, it will go thru after I hit the send button a couple of times.
A MICROSOFT OUTLOOK BOX APPEARS WITH A TRIANGLE WITH A ! INSIDE IT. THE MESSAGE SAYS THE OPERATION FAILED.
(2)   
ANOTHER CODE APPEARED WHEN I TRIED TO SEND THIS E-MAIL SO I CLOSED OUTLOOK AND RE-STARTED OUTLOOK. THE MESSAGE READ, CANNOT CREATE THE E-MAIL MESSAGE BECAUSE A DATA FILE TO SEND AND RECEIVE MESSAGE CANNOT BE FOUND. CHECK YOUR SETTINGS IN THIS MICROSOFT
OUTLOOK PROFILE. IN MICROSOFT WINDOWS, CLICK CONTROL PANEL.CLICK USER ACCOUNTS AND THEN CLICK MAIL. CLICK SHOW PROFILE, AND THEN CLICK PROPERTIES.
When he tries to open an e-mail, he gets an error message.
If he tries to mark an e-mail unread, he gets a different message.
Thanks Ben