http://www.mozilla.org/security/known-vulnerabilities/thunderbird30.html#thunderbird3.0.5
http://www.mozilla.org/security/announce/2010/mfsa2010-25.html
http://www.mozilla.org/security/announce/2010/mfsa2010-26.html
http://www.mozilla.org/security/announce/2010/mfsa2010-29.html
http://www.mozilla.org/security/announce/2010/mfsa2010-30.html