If you have installed multiple web browsers on Ubuntu 11.10, you may wonder how to set one of them as the default web browser. In this tutorial we will help you select a default web browser as well as setting a default application for mail, calendar, music, video, and photos under Ubuntu 11.10 Oneiric Ocelot.
1. Click System Settings from the top panel:
2. Click now System Info:
3. Click Default Applications and on the right pane of the window, select which web browser or application you want to set as default: