If you have upgraded to Ubuntu 11.10 (Oneiric Ocelot), you will notice that a window will show up whenever you plug in a USB removable media; the same way as in Windows operating systems. In this tutorial, we will show you how to easily disable this feature and get rid of this annoying window on Ubuntu 11.10.
1. Click the power button and select System Settings.
2. Under the Hardware section, click Removable Media.
3. Now check on this option:
"Never prompt or start programs on media insertion"
Then close the window.
4. From now on, no more prompts whenever a removable media is inserted.