A new Firefox update was released earlier this week, so what could possibly look old in your shiny beloved browser? You guessed, that old fashioned birdie icon in your search bar that Twitter updated a couple of days ago.
Download this updated Twitter search plugin (it is the same shipped with Firefox except for the icon), rename it to twitter.xml and copy it to your Firefox search plugins folder (on Windows, C:Program Files (x86)Mozilla Firefoxsearchplugins).
Are you hip or what?!