Solving the Tangerine problem
I’ve used Tangerine for years, but unfortunately development of the app seems to have stopped in 2009. The most recent version 1.2 of Tangerine is only officially compatible with OS X 10.5. Using it on OS X 10.6 or 10.7 results in the app quietly shutting down after a few minutes. Until now I have simply been re-launching it as needed.