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Old 15. May 2011, 12:21 PM   #9 (permalink)
professorx
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Join Date: May 2011
Posts: 1
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I use Bitmeter OS. Accurate, uses hardly any memory (ever), has excellent query function with export. Data doesn't get lost if pc crashes. see here
Bitmeter (including this) is one of the few that provide hourly usage logs.
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