To whom it may concern at Adobe,
The following are additional problems.
1. The index.pdf includes SWFs for its dynamic parts (RSS readers and video). Sometimes, randomly, the SWFs do either of the following: they disappear (the only way to make them appear again is to click on their area); they disappear and reappear like christmas lights (the only way to make them stop is to reload the page); they also disappear or reappear when resizing the browser's window.
2. The mouse wheel flips the pages instead of scrolling. More precisely, each page of the website is displayed in full. If one scrolls, however, the engine should try scrolling, find that the page is displayed in full, and therefore nothing should happen. Instead, the engine shows the next page of the PDF. The PDF was built with the "single page view" flag, but the engine forces the "Enable Scrolling" mode. This seems to be a bug of Adobe Reader.
In summary, dear Adobe, please ensure that all platforms have the same version of Acrobat Reader plugin, and that the plugin is automatically updated, similarly to Flash Player 10.3. A single plugin (pdf+swf) would also be useful to have. Please also make an official loader as part of the plugin, both to solve (most of) the above problems and rise your own awareness of them. Failure to do so implies your failure to offer sound competition to HTML++.