The signal was an ABORT. My trace was created by starting gdb, loading amuled (file amuled), loading the core (core-file amuled-core) and then doing the backtrace. I compiled wxBase and amuled with the following configure lines:
wxBase:
./configure --prefix=/tmp/amule --enable-optimise --disable-compat24 --disable-compat22
amuled:
./configure --prefix=/tmp/amule --enable-optimize --disable-monolithic --enable-amule-daemon --enable-amulecmd --disable-nls --with-wx-config=/tmp/amule/bin/wx-config
The system is FBSD 5.4 base system in a Jail (strict chroot environment) with no additional packages installed. The monolithic amule is running perfect in a Jail, but I use a precompiled wxgtk-2.4.2_8 and tons of precompiled X packages to compile/run it.