It's an early version, and for many uses it's more stable and less intrusive than Reader. I have avoided Reader for years by using Safari, and later Chrome, wh

It's an early version, and for many uses it's more stable and less intrusive than Reader. I have avoided Reader for years by using Safari, and later Chrome, which each have their own built in PDF renderers. I'm glad that Firefox has caught up, it's one of the things that has kept me from using Firefox. I read a lot of PDFs, and loading the big, slow, clunky Reader plugin, or downloading the PDF, is a non-starter.