Firefox Tips

Duplicate current tab

Ctrl + click Reload button

Configuration settings

about:config

JavaScript Errors

Tools/Error Console

Profiles Location

%appdata%\Mozilla\Firefox\Profiles

Change number of results in URL bar

Change browser.urlbar.maxRichResults value in about:config.

See "Browser.urlbar.maxRichResults - MozillaZine Knowledge Base." Knowledge Base - MozillaZine Knowledge Base. Web. 16 Sept. 2011. <http://kb.mozillazine.org/Browser.urlbar.maxRichResults>.

Set Ctrl + Tab to go to most recently used (MRU) tab

Note: This is similar to the IE9 setting "Use most recent order when switching tabs with Ctrl+Tab".

Firefox 5
1) Change browser.ctrlTab.previews to true in about:config.

See "Making CTRL+TAB to go to Most Recently Used Tab • mozillaZine Forums." Web. 2 Aug. 2011.
<http://forums.mozillazine.org/viewtopic.php?f=23&t=2136713>.

Close Button on Last Tab Missing in Firefox

Firefox 5
1) Change browser.tabs.closeWindowWithLastTab to false in about:config.
Firefox 3.5
1) Change browser.tabs.closeWindowWithLastTab to false in about:config.
2) Add the following to userChrome.css:

.tabbrowser-tabs[closebuttons="alltabs"] > .tabbrowser-tab > .tab-close-button { display: -moz-box !important; } .tabbrowser-tabs:not([closebuttons="noclose"]):not([closebuttons="closeatend"]) > .tabbrowser-tab[selected="true"] > .tab-close-button { display: -moz-box !important; }
See: Show Close Button In Last Tab with Firefox 3.5 | Joe Riggs Bloggs
http://joe-riggs.com/blog/2009/07/show-close-button-in-last-tab-with-firefox-3-5/

Updates

2014-04-01 Added "Duplicate current tab"

2011-09-16 Added "Change number of results in URL bar"

2011-08-02 Added "Ctrl + Tab" section.

2011-07-19 Added Firefox 5 "Last Tab Missing" step.

Problem Ejecting USB Mass Storage Device

Problem
Unable to Safely Remove Hardware while trying to remove USB Mass Storage Device - (Drive E:)

Received message:

Problem Ejecting USB Mass Storage Device
The device 'Generic volumne' cannot be stopped right now. Try stopping the device again later.

Solution
Use Sysinternals Process Explorer to find locking process and terminate it.

References
"Problem Ejecting USB Mass Storage Device." Microsoft Help and Support. 25 May 2009
http://support.microsoft.com/kb/555665.

"Process Explorer." Microsoft TechNet: Resources for IT Professionals. 25 May 2009
http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx.