Why sleep 1 second at all? No use hogging up the CPU looping every second when you can simply sleep until the next event. 
my $last = 0;
for my $duration (sort {$a <=> $b} keys %actions) {
 sleep($duration - $last);
 $last += $duration;
 $actions{$duration}->(); 
}

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In reply to Re^2: Reminder for KDE Kid by ruzam
in thread Reminder for KDE Kid by KennV

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