I just submitted my first bug report. I hope it's useful but I would have submitted a more relevant report if it was easy to check against the latest build of Jmol.
I suggest to set up a web page serving a selection of jmol example scripts, but updated with nightly builds from svn. If I'd found something like that, I'd have tested my bug against it. I think that it might make it a bit easier for newcomers to get involved in bug fixing and development, and so the investment would be paid back by attracting community over time.
I realize that I'm proposing a bit of effort on behalf of the Jmol devs, who probably don't need this for themselves, but it would be a cool showcase of the level of activity in the Jmol project.
Anyway, thanks for a great piece of software, and hope to see it prosper!