> > We have seen on several daq systems this problem: we start a run and observe that the number of 
> > events written by mlogger to the output file is double the number of events actually collected. Upon 
> > inspection of the output file, we see that every event is written twice. Restarting the run usually fixes 
> > this problem.
> 
> mlogger.c fixed svn rev 4497. (from tr_start(), call tr_stop() if somehow it was not called already by end-run transition).

There is a new problem: after an unsuccessful run start, the next run start bombs with the error "output file runNNN.mid already exists". One way around this is to 
manually remove the useless data file, another is to bump up the run number. Better solution is to automatically erase the output file created by unsuccessful run 
starts.

K.O.