Hi rob.hurst,

It sounds like your site is taking awhile to load!

This extension might be a good solution for your site since it loads tabs on selection.

Firefox Extension : LoadTabOnSelect 3 {link}

Hi rob.hurst, that message usually indicates that a script is in a loop, which can indicate a script that will never finish. So Firefox pauses the script to give you the option to kill it. That's nearly always what you want, but sometimes not.

The default "non-responsive" time before Firefox shows the message is 10 seconds. You can extend that time, but it's not a site-by-site setting, it would be for all sites. If you almost never see the message on any site, a rare long stall on another site might not be that much of a concern.

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk.

(2) In the search box above the list, type or paste run_time and pause while the list is filtered

(3) Double-click the dom.max_script_run_time preference to display a dialog where you can change 10 to 15 and click OK.

If 15 is too short, you could try 20. The idea is to give the minimal time needed to avoid bogging down your browsing on other sites.

In theory, using a value of 0 will let scripts run indefinitely, but this allows devious sites to lock up the tab and potentially force you to crash Firefox to escape them, so I definitely do not recommend having Firefox wait forever.

References:

• Warning Unresponsive script - What it means and how to fix it
• http://kb.mozillazine.org/Dom.max_script_run_time