yum list installed | grep thunderbird
You have installed thunderbird extensions from fedora repos, I presume. In that case just remove them.

On Jun 27, 2012 2:18 AM, "JD" <jd1008@gmail.com> wrote:
I have disabled 3 extensions from TB.
However. after restarting TB, I was hoping
that now I would be provided with a Remove
button for each of these extentions. Only
the Enable button shows up.
So.... are thsese extensions built-in and
cannot be removed?
The extensions are:
Estonian ID Card
FireTray
laajennus Voikon kaytoon
provider for google calendar

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