$ cd /var/crash
Just remove the crash report files
$ sudo rm /var/crash/*
gksudo gedit /etc/default/apport
The file would contain something like this
# set this to 0 to disable apport, or to 1 to enable it
# you can temporarily override this with
# sudo service apport start force_start=1
Just set the value of enabled to 0, and this will disable apport.
Save the file and close it. From the next boot onwards, there should be no error messages ever….