Safari, Mac OSX.6, PDF-Viewer and online review

Hi,
 
 
Mac OS X.6.6 - Acrobat X - Safari + PDF Viewer
 
Sometimes (not each time) when opening an online PDF using Safari it display that yellow bar saying that "This doc is an online review".
(image1: http://pix.am/qgo8.png )
 
But, obviously, the PDF is not an online review, it's just a simple PDF staying on a web server…
 
After closing, Safari displays an error message arguing about some missing JavaScript features in 32 bits mode.
(image2: http://pix.am/Aehz.png )
 
And, when running Safari in 32 bits mode, this is the Acrobat's console that displays an error message:
RaiseError: L'utilisateur a demandé l'arrêt.
FSAnnotStore.sync:0:Internal undefined:Exec
== L'utilisateur a demandé l'arrêt. (in english it means: "Cancelled by user")
 
 
Can someone explain what happens ?
Is it an expected behavior ?
How can I prevent this yellow bar to be displayed ?
 
You can test here:
http://abracadabrapdf.net/articles.php?lng=en&pg=672
http://zetetique.fr/divers/POZ66.pdf
 
 
Thanks.