since we released GreenCloud, there are some people who reports they can't print, but actually we found a case this morning which fits this thread from Adobe http://forums.adobe.com/thread/791386when you open the pdf with Adobe, you click on print button, but it will crash. ( adobe reader X closing itself ) we are investigating on our side, but seems to be relative to Adobe Reader X too .. to validate this case, we suggest to install an alternative PDF reader such as : http://www.foxitsoftware.com/Secure_PDF_Reader/