Security fixes in this version:
MFSA 2007-17 XUL Popup Spoofing
MFSA 2007-16 XSS using addEventListener
MFSA 2007-14 Path Abuse in Cookies
MFSA 2007-13 Persistent Autocomplete Denial of Service
MFSA 2007-12 Crashes with evidence of memory corruption
For more info, see http://www.mozilla.com/en-US/firefox/releases/1.5.0.12.html
Note: Firefox 1.5.0.x will be maintained with security and stability updates
until June 2007. All users are strongly encouraged to upgrade to Firefox 2.