Symptoms
A job is configured to "Execute only if previous instance(s) complete within the specified interval" or "Wait for the specified interval, then execute regardless of whether previous instances have finished." If instance 2 is triggered and instance 1 is already running, adTempus does not properly start instance 2 if instance 1 completes within the interval.
As a result, if the "Execute only if..." option is in use, instance 2 will be skipped. If the "Wait for the specified interval..." option is in use, instance 2 will execute once the wait period expires, even if instance 1 finishes far sooner.
Status
This issue was corrected in a maintenance update released on April 30, 2008. See article K00000304 for information about obtaining this update.