isolated to just 2 objects. steps to reproduce:
1. turn on audio processing in dsp status
2. make a [rect~ 50]
3. make a [cycle~ 201]
4. connect cycle's output to rect's "sync input" on the right
machine running max msp jitter m4l 5.1.7 on os x 10.5.8 macbook 2.4ghz core 2 duo
tried on a mbp running 10.6.4 and it does not crash.
not complaining or anything but i accidently made this connection right in the middle of a slightly arrogant "look how cool max is" demo. lost the patch and nerds laughed at me.