This morning, Firefox has released an update to fix several vulnerabilities, including security fixes. Those fixes are wrapped up and build as Firefox 3.0.5. Here's the list taken from the release notes:
# Fixed several security issues.
# Fixed several stability issues.
# Official releases for the Bengali, Esperanto, Galician, Hindi, and Latvian languages are now available.
# Replaced the End-User License Agreement with a new "Know Your Rights" info bar on initial install.
# When installing multiple signed XPIs simultaneously, previous versions of Firefox would fail.
# Fixed several issues found in the accessibility implementation.
# Added the ability to send OS-specific system notes in the crash reporter.
Check the full list here
This update can be retrieved from Firefox's auto update mechanism, so go get them now