Quick Farscape Question

In the discs I received from Netflix, it appears that the order of the eps goes 2.18, 2.22, and THEN 2.19-2.21. Is this accurate? It seems odd that the last ep wouldn't be last. I can understand the huge switcheroo in the beginning of the first season, but this is just odd.

*thwump*

I've just watched 8 straight hours of Farscape. Season 3 credits are cooler visually, less awesome in the music department. Nice to see Crais and Scorpy added, though.