After yesterday’s clone I noticed some applications behaved erraticly, amongst which Preview, Thunderbird, Appfresh… rather irritating.
After some searching I found the fix on this CCC Forum thread:
sudo chgrp wheel /var/folders/*
sudo chmod 700 $TMPDIR
sudo chown $USER $TMPDIR
In short, the permissions for that directory werent taken over correctly from the original, hence the problems. All fixed now ;)