Firmware 188.8.131.52 has a serious problem with text scrolling in the phone book on a Snom 760. It frequently scrolls two names, or jumps an entire page.
There may also be other key-bounce issues, though it's hard to say, as a number of other functions appear to have become flaky on this version.
We've reverted to 8.7 because the phone book is unusable like this, and we don't like the new 'missed call' behaviour either. (Missed calls are frequently not notified reliably and when they are notified the can't be cleared with the X button.
I see another forum posting on a similar topic but it's been closed - is this going to be address quickly, as 8.9 is currently unusable?