Firefox 2.03 will fix a lot of security issues but I am sure
you didn't even know about them at the first place. However we advise you
should install it as it is available as of yesterday.
This version fixed a FTP PASV port-scanning and that was the
only mayor thing fixed in this release.
The 2.02 fixed far more issues
including Privilege escalation by setting img.src to javascript: URI, onUnload
+ document.write() memory corruption, Embedded nulls in location.hostname
confuse same-domain checks, Mozilla Network Security Services (NSS) SSLv2
buffer overflow, SS and local file access by opening blocked popups, Spoofing
using custom cursor and CSS3 hotspot, Information disclosure through cache
collisions, Improvements to help protect against Cross-Site Scripting attacks
and finally Crashes with evidence of memory corruption (rv:1.8.0.10/1.8.1.2).
No matter how do you feel about this update we recommend you
go for it as it will make you safer on the net.
You can read more about the release here.