Password management is a part of all major web browsers, and it just may be helping thieves steal your personal data, from banking logins to Facebook accounts.

Chapin Information Services conducted 21 security tests on Opera 9.62, Firefox 3.0.4, Internet Explorer 7, Safari 3.2, and Google Chrome 1.0. The results were not good.

Opera and Firefox fared the best, both passing 7 tests, with Internet Explorer 7 passing 5 tests. Both Safari and Google Chrome only passed 2 tests each.

It looks like browsers makers have a lot of work to do. Full results and details on each test can be found on the Chapin Information Services website.

Mozilla have just released updates for both Firefox 2 and 3. These new versions fix both security and stability issues.

You can view the full list of changes in both the Firefox 3.0.4 and Firefox 2.0.0.18 changelogs.

Existing users should be updated automatically in the next few days, but if not you can use the download links below:

Download Firefox 3.0.4
Download Firefox 2.0.0.18