The Mozilla Foundation has patched a faulty patch that was itself subject to a security vulnerability.
Mozilla urges users to upgrade to versions 220.127.116.11 or 18.104.22.168 of Firefox and versions version 1.1.1 or 1.0.8 of SeaMonkey. Many users will already be running these versions of the software, which were issued last week as a result of separate security problems.
The need to patch faulty security updates is a problem that periodically affects updates from Redmond, though it's something of a first for the Mozilla Foundation. ®