Mozilla Messaging has release the fourth update for Thunderbird 3.0. The new Thunderbird 3.0.4 update includes several security and stability updates [Thunderbird release notes]. Thunderbird 2.0 and older users should upgrade by downloading Thunderbird 3.0.4 directly via http://getthunderbird.com. Thunderbird 3.0 users should be prompted to update within the next 48-hours or can do so manually via Help >> Check For Updates…
Source: Mozilla Developers News
