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If you install quota support on current versions of Ubuntu, modify your fstab to add usrquota and/or grpquota options, and run quotacheck, you will get a message like this:

quotacheck: Your kernel probably supports journaled quota but you are not using it. Consider switching to journaled quota to avoid running quotacheck after an unclean shutdown.

Here is an excellent detailed set of steps for setting up journaled quotas: