I had a similar issue in OS X 10.9.5
After trying aaaall proposals I found in different forums and websites, the one that seems to work is the one suggested here:
Booting into “safe mode,” opening the Finder, poking around, and
- Restart your Mac.
- As soon as the grey boot screen appears (or
slightly before), press and hold shift on your keyboard.
- Once you see a progress indicator, let go of shift.
- Once your Mac boots, you’ll have to login to your account (auto-login is disabled).
- Open the Finder. Navigate through a few folders.
- Restart normally
Just for extra info: after fixing this, Finder was not freezing anymore, but it started relaunching every minute or so. Also very annoying.
Solution for this was to de-couple Google-Drive, as suggested in this thread, post #7.