You open Firebug and are trying to fix some thing in your way-cool-AJAX app. And in you notice something that says “Firebug’s log limit has been reached.” giving you an option to do some thing with preferences. You go to “about:config” and start wondering what to do now? Search for “extensions.firebug.console.logLimit” and increase it from 500 to some thing that suites you better. And thats it. 
[...] console and started clicking through users. By choosing “Persist” and increasing the console log limit, I was able to record the IP address of each user in the console. When finished, I copied the [...]