From the update page:
Update 03.10.2011 - Version 3.16.034
- Fixed: Application update notification issue
- Fixed: Payment using SMS is taking too long to complete, especially when the mailbox is open and has a lot of messages
- Fixed: In some cases, the client accidentally deletes the SMS messages on the phone
- Fixed: Sometimes, the Client fails to silently sign-in, Spinner is always visible in the account view
Not that I'd hit any of these issues, but fixed is always better than broken, so I recommend updating anyway!