OS X: High CPU usage when TBB can't access a site
TBB 3.5 OS X: When a URL can't be accessed for whatever reason (bad Tor connection, bad internet connection, or internet off) TBB seems to get locked into a very high CPU usage situation that it can't remedy itself out of without user interaction (closing the window/tab or new identity etc)
This is not new. Prior versions of TBB on OS X that included Vidalia had the same problem.
Perhaps it's getting stuck in a loop somewhere ?