I too had a lot of troubles with the 2.16 right after upgrading. It has made my bluetooth connection with my Nissan Altima usable but it was locking up the phone a lot. Those lockup issues have seemingly disappeared. Strange.
2.16 has also improved performance for me significantly. I am still bummed about no working GPS when I clearly bought the phone with that as a advertised feature but I won't go down that path here.
