Comment 1 for bug 777392

I also have Chromium set as default, and software-center opened the website in Chromium. However the code uses the webbrowser python module, which should open the default browser UNLESS there is a BROWSER environment variable set, in which case the browser preference list is overridden by this. I have tried setting the BROWSER variable, and in that case software-center did open the sites in Firefox indeed.

So to check whether you also have a BROWSER variable set, type in the terminal 'echo $BROWSER' (and please post the output here). To clear the environment variable use the terminal command 'unset BROWSER'. Please comment the result after trying these.