I'm not one to be linking computer software freebies* but this particular application is so worthy. Adobe has been killing me with UPDATE ME demands recently, and I stumbled upon Nitro PDF Reader, quite by accident. A blessing in disguise! Not only is it quiet - it loads so much faster! I love it. And, it's free!

http://www.nitroreader.com/


* software freebies - I literally must be a queen on this subject. If it does the job and is worthy and is legally free, I can confidently recommend the application, if it exists! I've had years and years of experience avoiding MS and expensive apps that are easily replaced by freeware. Any requests?