
What's new in Firefox 3.6.18, Mozila only mentions:
Fixed several security issues.
Fixed several stability issues.
And the security issues were:
MFSA 2011-24 Cookie isolation error
MFSA 2011-23 Multiple dangling pointer vulnerabilities
MFSA 2011-22 Integer overflow and arbitrary code execution in Array.reduceRight()
MFSA 2011-21 Memory corruption due to multipart/x-mixed-replace images
MFSA 2011-20 Use-after-free vulnerability when viewing XUL document with script disabled
MFSA 2011-19 Miscellaneous memory safety hazards (rv:3.0/1.9.2.18)
Mozilla Firefox 3.6.18 is available here:
http://www.mozilla.com/en-US/firefox/all-older.html
UserAgent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.18) Gecko/20110614 AlexaToolbar/alxf-2.13 Firefox/3.6.18

