Receive negative running time

[philippstats]

I receive negative running time for some of my jobs and don't know where it comes from. Somehow time.done is before time.started.

> library(dplyr)
> filter(getJobInfo(reg), time.running < 0)
  id  prob  algo repl      time.submitted        time.started
1  7     c     S    1 2016-03-15 09:29:13 2016-03-15 12:56:27
2  8     c     S    1 2016-03-15 09:29:13 2016-03-15 12:56:27
            time.done time.running memory time.queued error.msg      nodename
1 2016-03-15 12:48:59         -448  699.4       12434      <NA> mpp2r01c02s08
2 2016-03-15 12:52:54         -213  736.7       12434      <NA> mpp2r01c02s07
  batch.id r.pid      seed
1  1232685 15255 983190738
2  1232686 27257 983190739