I don't know with which beta version it started, but in the recent betas, the Dropbox sync has become slower and slower, i.e. it takes a lot of time to sync my items, even when I'm on a fast Internet connection.
I currently have 1067 items in my keychain and syncing takes about 5-6 minutes. That was A LOT faster in the early betas.
Is this an expected behaviour with that many items or is something going wrong with mine?