Pages cant load
pages are loading and loading and never load
This problem is caused by AVG Safe Search and AVG Security Toolbar which you have installed.
Uninstall both by clicking the orange Firefox button, go to Add-ons, then Extensions. You'll find that pages will load properly afterwards.
Firefox has its own built-in security which will warn you if a site is untrustworthy, so you don't need to be concerned about system security.
If this suggestion resolves the problem for you, please click the Solved it button next to this post after you log in into the forum. This will help others searching for a solution to the same problem.