Question

Why does the scheduler say the "next run" for a scheduled service is 92341234..... seconds when it is only X seconds repeating?

Answer

The scheduled task is currently running.
While running the task's "next run" value will show some extremely large number (see picture below). Simply refresh the screen a few times and it will most likely return to a sensible sounding number.

Example screenshot:

The following shows a 10 second interval task at the end of the list which is currently running. Note the high "Next Run" value.