Thanks for taking the time to open this bug report and helping to make
Ubuntu better.
The logs show that mysql pre-install failed because your root disk is
full. You may be able to save some space by clearing out old files in
/var/log, and clearing out the apt cache with 'apt-get clean'. If
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https://bugs.launchpad.net/bugs/693369
Title:
package mysql-server-5.1 5.1.41-3ubuntu12.8 failed to install/upgrade:
subprocess new pre-installation script