iTunes 10.3.1 is broken WRT sorting artists with international prefixes - notably, "der", "die", and "das".
"das kertel" is listed in the artists pane under D, as are "Die Füenf" and "Die Ärzte".
Meanwhile, The Dells are also listed under "D", as they should be.
My system is localized to German.
I can change the "Artist for Sorting" in the Get Info pane (restart iTunes to make it work in the artist pane), but it's another extra thing that needs to be done for every track/artist affected, and I'm primarily annoyed because THIS USED TO WORK JUST FINE:
Back then, the problem was the opposite - that the localized strings (der, die das) WOULD be excluded sort fine, but then "the" would not. They fixed that in 7.3 - four years ago.
I have no idea when they broke it in the opposite direction, but it's been annoying me for a while.