Firefox keeps hanging or freezing from 1-2 minutes. Usually when I open tabs. I've already tried this on safemode and it STILL occurs

The default of the pref network.http.max-connections has been increased from 30 to 256 in Firefox 6+ versions.

Try to decrease the value of the pref network.http.max-connections from 255 to a setting like 30 as used in Firefox 3 versions.

• https://support.mozilla.com/kb/Firefox+never+finishes+loading+certain+websites

Switched the network.http.max-connections from 255 to 30.

Still hangs up now and then.

You can try:

• http://blog.bonardo.net/2011/09/30/is-your-firefor-freezing-at-regular-intervals
• Places Maintenance: https://addons.mozilla.org/firefox/addon/places-maintenance/