Great - can you tell me how or give me a reference on setting up core dumps? [UPDATE]My phone is unbricked. The problem was somehow caused by columbus - its install scripts removed some library directories from /etc/ld.so.conf which mean that core apps (modest) wouldn't load which sent the phone into a reboot loop.
mkdir ~/MyDocs/core-dumps
deb http://repository.maemo.org/ fremantle/sdk free non-free deb http://repository.maemo.org/ fremantle/tools free non-free
apt-get update && apt-get install sp-rich-core