All bookmarks, history etc. are in the places database. This can get fragmented over time, slowing things down. Fix this by:
1. Opening tools > error console
2. Paste Components.classes["@mozilla.org/browser/nav-history-service;1"].getService(Components.interfaces.nsPIPlacesDatabase).DBConnection.executeSimpleSQL("VACUUM");
3. Press enter.
The interface may freeze up for a little bit, but things should run faster
I like the ease of use and unobtrusiveness of this twitter client for Firefox. Does all I need to1 without much fuss and looks great.
TwitterFoxPencil Sketching: a new Firefox addon that looks like a credible alternative to Visio. Has basic components for mocking together websites very quickly, as well as the ability to run outside the browser as a XULrunner application. Hopefully more stencils coming soon as well.
From lifehacker an inline PDF viewer for Firefox 3 and Mac OSX 10.4 and higher. Get it from http://code.google.com/p/firefox-mac-pdf/.
June 17th (if all goes to plan for them) will be the day that Mozilla tries to set a world record for the most software downloads in a single day. Help set a record and get a good web browser in return.
There is no option that I can find to turn it off, so, if your brave, type about:config into the address bar, accept the “I won’t break anything, I promise” message if it appears, and type image into the filter. You need to change browser.enable_automatic_image_resizing value to false. Just double click on it and it’ll be done.