Comment 5 for bug 411691

The linked thread from the Debian bug report says to simply touch the missing file:

http://groups.google.com/group/mozilla.feedback.firefox/browse_thread/thread/cc67945318eafad3/2c3b310cf1cb3f97?lnk=raot

I assume that Thunderbird is using the same Gecko/Mozilla rendering code, hence the same error in different packages.