Daily processes not running. Why not?

Question

For no reason discernable to me, my dual 2Ghz PowerPC G5 running 10.4.6 suddenly stopped running the scripts in /etc/periodic/daily. The strange thing is that the processes in /etc/periodic/weekly and /etc/periodic/monthly are still executing weekly and monthly, as appropriate.
According to the /var/log/daily.out, the last time the daily processes ran was the 27th of April, so I suspect something failed around that time. The log for that day shows that not all the entries were run. I checked /System/Library/LaunchDeamons, and the launchd entry for com.apple.periodic-daily.plist is there and is unchanged since installation.
The system log for the 27th shows only these entries:
Apr 27 03:57:49 hostname cp: error processing extended attributes: Operation not permitted
Apr 27 03:58:15 hostname cp: error processing extended attributes: Operation not permitted
Entries like these also show up the 26th, 29th, May 1st and May 6th, so that wasn't the only time.
What do I check next?
Dual 2Ghz PowerPC G5   Mac OS X (10.4.6)  

Answer 1

The computer is on 24/7, or as close to it as I can
get, so being off isn't a problem.
Even if turned off regularly the daily scripts should run at least a couple times a week. On my work computer weekly and monthly never run because I turn it off for the weekend, but the daily still runs. So my point is that the monthly is the first most likely not to run, then weekly, and daily not running, ever, would be practically unheard of.
Of course, that doesn't solve the problem. You
should repair permissions and run Disk Repair from
the install disk. You could also try deleting the
preferences then running it manually from the
Terminal to reset it.
Which preferences are you referring to?
I don't know, do a search with EasyFind, not Spotlight, and see what you can find. And check out Apple's Knowledge base. There has to be at least one preference to delete but you might need some detective work to find it.