Go to Add or Remove Programs and look for Anti Phishing Domain Advisor. If you click on "Click here for support information" you'll see it is a Panda program. Uninstall it. Solves the problem. Don't know why the Firefox folks aren't telling people this!

i removed my anti-phishing domain and i recently downloaded a toolcleaner for my pc and i removed it from my pc and that was the problem and my yahoo mail i can access it...

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

• Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove Cookies" from sites causing problems:

• Tools > Options > Privacy > Cookies: "Show Cookies"

amalahi,

Thanks a ton. Your solution worked. I wish Firefox folks look at this serious issue & release an update.

sunder

Thank you! Removing Anti-Phishing Domain was the only thing that helped. I also couldn't load some websites properly and interestingly FF couldn't show Google Images past page 1.Fixed that too!