Hmmm. All just really odd. The upgrade is working beautifully for me and it's been since the release date. Had a minor problem getting the DM to recognize that it was an update and install it though.
I've never had a blue tooth issue and have had the plantronics 510 all along. I no longer experience the "silence" during the first few seconds of a call and am receiving picture mms and picture mail left and right. They used to be blank.
One dropped call since the install. Can't complain here...so far.