After I removed my Adobe PDF Software from my system, I could no longer access pdfs using any the web browsers (Firefox, IE, Chrome) despite the fact
I downloaded and installed FOXIT pdf make it my default program.
I then tried to access the same PDF with the IE (no adds-on) and i was successful. I am like Hmmm! maybe the previous uninstall left some residual browser integration information on my system.
Solution : I ended up reinstalling ADOBE Reader and Use my Revo Uninstaller to remove the software.
Other Links that you might find useful:
http://kb2.adobe.com/cps/328/328233.html