Mozilla has released version 1.5.0.5 of Firefox, fixing several security issues and bugs as outlined in the release notes. The one for Win32 can be downloaded from the official FTP (local US mirror ~ 4.88MB), and those for other languages and OS - from here.

Firefox 1.5.0.5 is a security update that is part of our ongoing program to provide a safe Internet experience for our customers. We recommend that all users upgrade to this latest version.

- Improvements to product stability
- Added changes for Frisian locale (fy-NL)
- Several security fixes

FYI, Firefox is getting its first tastes of malware thanks to a new Trojan Horse that masquerades as an extension for the browser. Security firm McAfee says the Trojan, which is dubbed FormSpy, relies on another Trojan known as Downloader-AXM to download and install itself. Once downloaded, FormSpy installs itself as a Firefox extension. The program appears as "NumberedLinks 0.9" extension, McAfee said. The extension normally would allow a user to navigate links by numbers using the keyboard rather than a mouse. Then, FormSpy can transmit information in a Web browser to another Web site, which could include credit card numbers, passwords, and electronic banking pin numbers, according to McAfee.