Hallo and happy New Year!
I had an unstable PC and was out for vacation, so I was unable to crunch for some weeks. When I came back to operation on 2nd Jan., BOINC restarted tasks and crunched them to end, that became downloaded on 8th Dec. 2013, see one of three. So by ending this tasks were too late to become accepted and I wasted at all more than 22h CPU-hours. A short check at the beginning of the restart would have circumvented this.

Kind regards and happy crunching
Martin

Those tasks were already started, so Boinc would have continued with them, any tasks not started will get aborted, and seemed have been,
Boinc should have told you on startup that they were overdue (via the Event Log, and via a Notice), and that you should consider aborting them, did you take notice of that?

2013-12-11 15:14:24.0889 (4236) [normal]: Coarse grid sky:1/1 f1dot:2/14 f2dot:2/9
2013-12-11 15:16:48.2289 (4236) [normal]: Coarse grid sky:1/1 f1dot:2/14 f2dot:3/9
2013-12-11 15:19:12.5723 (4236) [normal]: Coarse grid sky:1/1 f1dot:2/14 f2dot:4/9
2013-12-11 15:21:36.8453 (4236) [normal]: Coarse grid sky:1/1 f1dot:2/14 f2dot:5/9
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Claggy