We strongly recommend the update to Firefox 3.5.2
Firefox 3.5.2 fixes security issues found in Firefox 3.5.1 (2 Critical, 1 Moderate, 1 Low):
MFSA 2009-46 Chrome privilege escalation due to incorrectly cached wrapper.
MFSA 2009-45 Crashes with evidence of memory corruption (rv:22.214.171.124/126.96.36.199).
MFSA 2009-44 Location bar and SSL indicator spoofing via window.open() on invalid URL.
MFSA 2009-38 Data corruption with SOCKS5 reply containing DNS name longer than 15 characters. […]
We strongly recommend the update to Firefox 3.0.12 or Firefox 3.5.1 .
Firefox 3.0.12 fixes several security issues found in Firefox 3.0.11 (5 Critical, 1 High) […]
We strongly recommend the update to Firefox 3.0.11.
Firefox 3.0.11 fixes several security issues found in Firefox 3.0.10 (4 Critical, 1 High, 2 Moderate, 2 Low):
MFSA 2009-31 XUL scripts bypass content-policy checks
MFSA 2009-30 Incorrect principal set for file: resources loaded via location bar
MFSA 2009-29 Arbitrary code execution using event listeners attached to an element whose owner document is null
MFSA 2009-28 Race condition while accessing the private data of a NPObject JS wrapper class object
MFSA 2009-27 SSL tampering via non-200 responses to proxy CONNECT requests
MFSA 2009-26 Arbitrary domain cookie access by local file: resources
MFSA 2009-25 URL spoofing with invalid unicode characters
MFSA 2009-24 Crashes with evidence of memory corruption (rv:188.8.131.52)
The sooner… the safer!