I've been running a script after reboot by using the crontab-@reboot-entry for more than 1 year without any problems.
On 21 Jun 2014 I've done a system-update with pacman. One of the many updated packages was
cronie 1.4.11-1 -> 1.4,11-2
From that time on the @reboot-entries weren't executed anymore while all other jobs (hourly,...) are still executed.
No hints in syslog and journal. The @reboot-jobs simply have disappeared in the log files.
Any idea how to find out whats wrong with cronie (or maybe some other update related to cronie) ?