A huge gripe of mine is that the podcast playlists node was removed. The playlists that I've created in iTunes still sync to my iPhone, but there's no way to play the damn list. The removal of the Podcast Playlists node has presented itself with the last 3 major releases, then it appears later. Still waiting....sigh.

I sure hope v3 is multi-threaded...as to stop FF from choking when I open 15 tabs at one time.