Firefox 3.0.4 fixes several issues found in Firefox 3.0.3:

• Fixed several security issues.
• Fixed several stability issues.
• Official releases for the Icelandic and Thai languages are now available.
• Beta releases for the Bulgarian, Esperanto, Estonian, Latvian, Occitan, and Welsh languages are available for testing.
• Updated the internal Public Suffix list.
• Fixed an issue where the IME input tool used to enter Japanese, Korean, Chinese and Indic characters was covered by the “Add Bookmark” panel. (bug 433340)
• Enabled additional EV root certificates. (bug 451305)
• Fixed an issue where some passwords saved using Firefox 3.0.2 did not work properly. (bug 457358)
• In some cases, Firefox would not properly save proxy settings for protocols other than HTTP. (bug 446536)
• See the Firefox 3.0.3 release notes for changes in previous releases.

See the complete list of bugs fixed.