Here's how you can disable system crash reports in Ubuntu 14.04.
1. Open a terminal window.
2. Type in the following command then hit Enter.
sudo gedit /etc/default/apport
3. In the text file, find "enabled=1" and change it to "enabled=0"
4. Save and close the file.
5. Type in the following command to stop the apport service.
sudo service apport stop
If you are experiencing something crashes in your Ubuntu, and you don't like to be notify with reports. You can disable them easily.More at Noobs Lab
Additional Ubuntu Resources