Ah Ha! I\'m running Special pre-emptive kernel on a 5600 and the code is supposedly based on an 860. Since upgrading, I\'ve had a problem with VNC server as well. The Zaurus will become unresponsive, when I try to start apps they don\'t start or seg fault and within a couple of minutes the Zaurus goes back to the count-down part of the boot process.
I tried going back to the Sharp v1.32 ROM and VNC worked fine. I re-installed the special version and the problem is back. I\'ve tried capturing the output from VNCServer\'s errors but there doesn\'t appear to be much there.