Have you ever had problems with printing a PDF document with the Adobe Acrobat Reader? Have you seen a non-informative message:"The document could not be printed"?
I have... and it was surprising, frustrating and... well you know how it is.... especially when the printout is due yesterday...
I made some reasearch to make sure that such an event won't take place again. And it turns out that guys at Adobe don't know what they are doing (and they don't care for their customers either) and guys at the print shop have no idea how to handle the Acrobat.
There is a web forum I stumbled upon, which deals with this issue, especially one message.
It turns out that the printing problem appears for some PDF files - however it's hard to tell what exactly causes it.
Anyway, if you ecaountered this issue take a look at the top, right corner of the print dialog window.
If you see an option like below (Comments and Forms: Document and Markups) the Acrobat presumably won't print your file.