Good news for Firefox users on ubuntu -- Firefox 15 released with ubuntu 12.10 alpha 3 brings default pdf reader tightly integrated into the browser for optimal experience.
The default PDF reader lets you read pdf documents on the fly -- you can either open the local document or the online just inside your browser which relies on nothing more than standard web technologies.
If you’re on Firefox 14 (or ealier) you don’t need to wait to try it out: a beta extension is available to install. If you are little tech savy you can go for the beta version of the browser, which can be downloaded from Mozilla.
Also rocking up in this beta is support for the SPDY (‘speedy’) networking protocol – though not by default. The technology, developed by Google and on its way to becoming a web standard, aims to ‘reduce web page load latency and improve web security.’
To enable SPDY v3 in Firefox 15 head to about:config and search ‘SPDY’.