I didn't see it go up. I just noticed it's on the rock chart today. Figures it's not the studio version. We'll probably have to buy the whole "U2 18" to get that, and WITS.
it is lack of advertising. Really if you think about it, for no front page advertising on the Itunes store. #40 is not that bad. If was in the 60's yesterday. In Itunes UK they have a front page Advert for u218, but I'm not sure about any other countries.