To be honest I really do not know the reason why the RSS icon has been dismissed in Firefox4.
However here it is the solution to make the RSS icon come back.
- Just right click on the address bar (over the arrow) and choose ‘customize’
- drag the RSS icon close the address bar
Other possibility: you may download and install this add-on (https://addons.mozilla.org/en-US/firefox/addon/rss-icon/). I just prefer the first solution.
