Wouldn't a better way of resolving this bug involve portingthunderbird-traybiff to icedove-traybiff? Attached is a replacement for mozilla-traybiff_1.2.2-7.diff.gz which does exactly that.
We will probably need a transition package just like the icedove-gnome-support one in bug #393105.
DB
mozilla-traybiff_1.2.2-7.diff.gz
Description: GNU Zip compressed data
