When I received my new laptop a few weeks ago I went on to install some of my favourite apps. One of which is Tweetdeck, a desktop client I swear by of which if it never existed I would be tweeting far less.
Unfortunately Tweetdeck has replaced the brilliant old Adobe Air version with a native app, that frankly sucks, to put it politely. It was slow, the UI was horrible - just about everything about it was awful. To make matters worse, Tweetdeck (now owned by Twitter), has removed any references and installer to the old Adobe Air version.
Fortunately a quick digging on the internet reveals that someone has uploaded the Adobe Air version on Mediafire for posterity's sake. The version is 0.38.2, which as far as I know is the last version before Tweetdeck pulled the plug on it. Go download it now, and be assured that you are running a superior and far more productive version of Tweetdeck.