On Pd-extended 0.43.4, both on Snow Leopard (10.6.8) and the same system (late 2008 15" MacBook Pro) upgraded to Mavericks (10.9), I can no longer click and drag objects! I can still click and drag to select objects, but I must use Shift+arrows to move them.
Thoughts? I just tried an external mouse, as well as turning of tapping and multi-gestures on my trackpad. No dice.