All,
Just a quick update. gcc 4.7.1 has it the testing repository for Arch Linux. This will hopefully allow a resolution of what was causing the race condition in tdelibs/tdebase leading to the kwrite crash on line-wrap. However, as is the Arch tradition, the chroot build environment is going though growing pains resulting from the recent updates to the Arch package manager 'pacman'. We will hopefully work though this in the next couple of days and have a new set of packages build on 4.7.1 to test.
Nothing like working on the leading (not bleeding) edge :)