As far as I'm concerned Gingerbread is half baked.
When I enter in an event on my phone, like for instance I'm with a client and we're making an appointment, it takes on the phone but won't sync upwardly to Google calendar. It will sync from google calendar down to the phone just not the other way. All the settings are proper. I've gone through them 100 times.
When I did the upgrade on 7/18, my phone locked up and went blank. I had to have a tech to a hard reboot and return my phone to factory settings. Yea. notsomuch.
I've read in different places similar problems but none of the fixes fix mine.