The complete season 2 was available through other means 6 months ago (longer?) because Australia said fuck it and aired half a season in a month. The US on the other had is still airing episodes, they're only up to episode 20 last I noticed.
Maybe you're jumping the gun?
Of course they're not going to release a dvd of a show they haven't finished airing first run yet.
You could dvr the episodes as they come out/ in rerun. have you cracked your dvr and connected it to your pc?
Perhaps you should wait patiently for the tenth anniversary special Boxset which will have all the episodes in the in the correct order and dvd commentaries?