Adobe Reader X plugin works fine in latest release build. The block is not specific to Nightly. It took a few days for the block message to appear for me, maybe it'll take later for other clients. And ...

Portable Document Format (PDF) — first launched by Adobe in 1993 and now an open ISO standard — has long been the de facto standard for documents shared via the Web. Thanks to the free Adobe Reader ...

Unlike other browsers, Firefox only uses internal settings to select a PDF viewer. Open the "Firefox" menu, click "Options" and open "Applications." Scroll down to "Portable Document Format (PDF)." ...