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init is a little screwed up. For some reason, after a
shutdown record is written, a reboot record is written with a time-stamp
before the shutdown (less than 30 seconds, usually).
TANGIBLE RESULT: GNU
ac will notice the problem, log
everyone out (you can specify if you want the time to be added to the
user's total) and begin a new day entry based on the time of the
out-of-sync record. If you try to print out daily totals, you'll notice
that some days might have two or more entries.
SOLUTION: To fix this, a timewarp leniency value has been implemented. If any record is out of order by this number of seconds (defaults to 60) it gets ignored. If you need to change this value (if you think the totals are off because the value is too high), you can change it using the `--timewarp-value' flag. The rationale for the 60 second default is that of all of the machines with this problem, the largest timewarp was 45.
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