»In which we take a fall for the beta

Peer Guardian and Privoxy. I have time to play around with p2p shielding because the new Beta of the Safari web browser keeps taking a dive, knocking out my laptop (and, intermittently, work that I am doing -- !). It ducks into an unkill-able state, and I can't manage to whack it from the Dock, from Activity Monitor, from the Force Quit Applications menu, nor even from a command line (kill -9)! Re-booting seems to help, although it occasionally produces unbearable tuning signals upon reboot (wait, I did sync before flipping the power switch, right? I have to bounce on the power because properly shutting down the MacBookPro fails when it tries to kill Safari, which is the whole reason I'm shutting down in the first place ...).