My credits have been reduced from approx. 6500 to 4500. Any idea why this may occur?

There was a problem that caused some runs to have random additional credits assigned to them. Credits were recalculated yesterday to correct the problem (as detailed <a href="http://climateapps2.oucs.ox.ac.uk/cpdnboinc/index.php">here</a>).
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This answered my Question about 16000 missing cs's
the "this answered my question " button got me this;
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