I've just started watching Book 1 (yeah I'm really slow onto getting to it, I've just had other things to do that involves a lot of writing Kanji and Kana) and I'm enjoying it so far.

However I remembered that the last two books were online only, so I checked the official nick site to make sure I could watch them and I couldn't find them and what I could find was slow as hell (odd given my computer speed is 30mbs). Please don't tell me they're region lock? I also know that the episodes aren't shown on TV here in the UK (why is this does anyone know) so I can't use that option.

Does anyone know if Books 3 & 4 have a UK DVD release date yet or are being released in the UK at all (a worry given the UK distributors are really bad at not releasing the entrie runs of animation, just look at the Batman TAS DVDs for a big example of this)?