The bugs fixed in an ES are, as far as I know, always rolled into a Service Pack. It may not be in the fix listed in the service pack if it was marked Confidential. Perhaps due to a security hole that Cisco didn't want to broadcast and have exploited.
Oh and BTW be careful going to SPH, the phone load for the 7960 and 7940 phones is a nightmare. You will probably want to move back down to an older phone load.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...