I use TweetDeck extensively. When my default browser was Firebox, i had no problem opening links in firefox however when i changed my default browser to Google Chrome still the links in Tweetdeck were opening in Firefox. I thought thats strange, after googling for some time, i found this solution.
I think the problem is that AIR doesn’t ask the gnome for correct default browser. The solution to this is to set the deprecated variable manually, before you launch TweetDeck or any other AIR Application.
The following little script that does just that.
Start the Tweetdeck and open any link, voila you’ll see links opening in the default browser!
Thanks to Roy Tanck