How to change adobe reader default Page Display

This problem is described and addressed in the Adobe Forums here:

http://forums.adobe.com/message/2604875?tstart=0

"Steve Ragan's article in The Tech Herald gives you the correct information. Essentially, you must install Acrobat Reader (AR) version 9.3 and then IMMEDIATELY open AR and Check for Updates in the Help Menu. Your should get an offer to update to: Adobe Reader 9.3.1 (CPSID_50570). Download and install this update. I did so and now am able to easily and very quickly open any PDFs from within the website where I am working.
Success at last!! Hurrah!"

Hope this solves your issue.

Did you know PDF files can specify initial layout and zoom settings that take effect when you open them? (For example, when you choose the Export to PDF command in OpenOffice, a dialog box lets you specify the initial view and other user interface options that are saved in the PDF file.)

Your problem may be caused by certain PDF files changing the view settings when you open them. In that case, Adobe Reader has accessibility options to ignore the settings specified in PDF files.

I don't have Adobe Reader 9.1.1. But in Adobe Reader 8.2.0, I was able to go to Edit, Preferences, Accessibility, and there's a check box "Always use Page Layout Style" with a drop down box where you can choose "Single Page Continuous".