How To Remove “Unresponsive Script” Warnings in Firefox

You need to raise the default script execution time. Here’s how:

  1. Type “about:config” in your Firefox address box.
  2. Below the address box you’ll now see another long, empty rectangle – the Filter box. Here, type “dom.max_script_run_time”. Or just copy and paste it from here to there – but without the quotes.
  3. Right-click on this row, and select Modify.
  4. Replace “5” with “30” to raise the default maximum to 30 seconds.[source]


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