Backgroundrb devel - Jul 2007 - Backgroundrb scheduler seems to stop running

I have two scheduled tasks in my rails app:

background_schedules.yml

mail_sender_1:
  :class: :mail_sender_worker
  :job_key: :job_key_mail_sender_1
  :worker_method: :do_work
  :trigger_args:
    :start: <%= Time.now + 5.seconds %>
    :end: <%= 1.years.from_now %>
    :repeat_interval: <%= 60.minutes %>

cleanup_1:
  :class: :cleanup_worker
  :job_key: :job_key_cleanup_1
  :worker_method: :do_work
  :trigger_args:
    :start: <%= Time.now + 30.minutes %>
    :end: <%= 1.years.from_now %>
    :repeat_interval: <%= 60.minutes %>

Every morning between midnight and 2am they stop being triggered...

Everything else seems to run fine...

I have another background rb worker that is triggered when an external
app makes a call via an api... that one keeps running..
There are no errors in any of the logs, just that my scheduled tasks
never run again, unless I stop and start backgroundrb

my log:
20070716-22:19:16 (26124) start sending mails
20070716-22:19:17 (26124) finished sending mails
20070716-22:49:11 (26124) do_work in CleanupWorker called
20070716-22:49:11 (26124) started cleanup
20070716-22:49:11 (26124) finished cleanup
20070716-23:19:16 (26124) do_work in MailSenderWorker called
20070716-23:19:16 (26124) start sending mails
20070716-23:19:17 (26124) finished sending mails
20070716-23:49:11 (26124) do_work in CleanupWorker called
20070716-23:49:11 (26124) started cleanup
20070716-23:49:11 (26124) finished cleanup
20070717-08:19:45 (26124) do_work in ProcessVacancyWorker called
20070717-08:19:45 (26124) start processing vacancy
20070717-08:20:59 (26124) finished processing vacancy

As you can see the mail and cleanup workers last ran before midnight...
they should run every hour but there is a gap till 08:19 when the api
was called...

I added the end parameter to my schedules yaml but it made no
difference...

Any ideas?

thanks
levent