Hi Christophe,
No, I am on Ubuntu. I use Adobe Reader for any books I buy because many of the publishers (like apress) seem to recommend that. For all other stuff, I use the regular pdf viewer.
I took your suggestion and used the regular Document Viewer on Ubuntu. The current layout seems to work perfectly on this one. Just weird why Adobe Reader was having problems though.
Ditching the Adobe reader for your books from now on. :)
Thanks, Sandip
P.S. The book seems great! Waiting for the final version!