This bug also exists in thunderbird 3.0.5~hg20100506r4837+nobinonly-0ubuntu1~umd1 from ppa:ubuntu-mozilla-daily/ppa software source
This bug also exists in 6r4837+ nobinonly- 0ubuntu1~ umd1 mozilla- daily/ppa software source
thunderbird 3.0.5~hg2010050
from ppa:ubuntu-