v0.9.2.1-g354c0f3-beta (64-bit) through 31.2.0 (Tor Browser 4.0.1) on Mac OS X 10.7.5, 2.5 GHz i7 MBP, 16 GB DDR3, 960 GB SSD
Intermittent issue - one time. I started Tor Browser, and let it initialize. Launched Bitcoin. Failed to connect. Check of log indicated it was trying to connect through port 8333.
Stopped Bitcoin Core, stopped & restarted Tor Browser, relaunched Bitcoin Core. This time, it connected through proper port 9150.
For some reason, at first launch, Bitcoin Core failed to read bitcoin.conf, or ignored what was within(?)