I ran across a bug with Pandora and Advanced Task Killer...
Whenever I open Pandora and then I kill it in Advanced Task Killer, the Pandora Widget on my home screen refuses to launch. I have to Delete the Widget and re-create it in-order for it to work correctly again.
I don't have this problem with the regular Pandora app shortcut, JUST the widget for some reason.
Anyone else have this problem?