I already upgraded my Firefox browser to its latest available version, the Mozilla Firefox 2.0.0.2. With this latest Firefox, things were already fixed such as:

1. MFSA 2007-07 Embedded nulls in location.hostname confuse same-domain checks
2. MFSA 2007-06 Mozilla Network Security Services (NSS) SSLv2 buffer overflow
3. MFSA 2007-05 XSS and local file access by opening blocked popups
4. MFSA 2007-04 Spoofing using custom cursor and CSS3 hotspot
5. MFSA 2007-03 Information disclosure through cache collisions
6. MFSA 2007-02 Improvements to help protect against Cross-Site Scripting attacks
7. MFSA 2007-01 Crashes with evidence of memory corruption (rv:1.8.0.10/1.8.1.2)

Download it here and more details here.