Problem with Cocoa Gestures and Panther!
Well, I went to the Panther release event at the Palo Alto store. The line stretched around the block (compared to the iPod Gen III rollout which was much smaller). Bought Panther, narrowly avoided buying an iSight (I’m really compulsive in that store for some reason), and came home to install OS X 10.3 on the Powerbook 12.
As usual Apple provided a seamless install (All 4 discs of it, including XCode), but I couldn’t get some of the editable areas in Safari or Mail to work (i.e. they weren’t editable, and the applications hung). I remembered that I had both SIMBL (for SAFT) and Cocoa Gestures installed (I would provide links to these, but I’m not suggesting you install them). I deleted both those InputManagers (needed to reboot in the case of SIMBL) and Mail/Safari were all better.