jpilot crashes when deleting records (on the desktop UI, not on the palm). This is 100% reproducible for my data set, and appears to be a known bug... there is a patch on the jpilot web site (http://www.jpilot.org/patch.0.99.8-memory) which fixes the problem for me. p.s.: there is also another patch (http://www.jpilot.org/patch.jpilot-sync) that's not in the distro yet.
Thank you for your bug report. This problem is fixed in jpilot-0.99.8-5.