Anybody got stability issue with Firefox 9.0.1. How to downgrade?

[hajime]

Hello. I had been running Windows 7 Professional on my MBP 2010 via Bootcamp for almost a year. There had been no major issue. However, after I upgraded Firefox from v 8.x to 9.0.1, the system does not seem to be stable. At one time, I had to force reboot the computer due to a system hang while playing video on youtube. How can I download to v 8.x while keeping all the settings/bookmarks?

 

[benjikan]

Since upgrading to 9.0.1 on my Mac Lion iMac Firefox does NOT open and hangs and F’s up my whole system where I have to force quit and re-boot my computer. Didn’t happen with 8. Am now using CHROME even though I prefer Firefox when it works!!!!