The reason must be the previous planning difficulties with the scheduling that began when the train company's new IT system was put into use on 1 November last year.
Train drivers have also turned to the union and questioned the legality of the schedules that the new system has developed.
Among other things, the system has scheduled train drivers to sit and drive for long periods of time in a row.
The most serious problems with the new system must have been remedied, but the planning difficulties remain, according to Lars Lindberg, director of traffic and service for the newspaper.