Downloaded to my iPad 2 fine. I have flipped through a few pages and am looking forward to reading it all on a 2 hour plane flight this evening. Graphics, text and all look really crisp and clean and easy to read.
Only one problem for me from that quick look, it appears that I can jump to an article from the contents page but, unless I am missing something, there is no way to go back without scrolling back page x page. It could do with a tool bar on the bottom with a link to the contents page, a sliding option or a bookmarks option.
Try an Australian Newstand mag called Cycle Torque as an example. Tap the bottom of the page and a toolbar pops up with links to the cover, contents page, bookmarks and library. A second bar will also pop up with a thumbnail view of each page and you can scroll through those as well.
Nothing is harder to see than the blindingly obvious!