Rrd not updating

[Everett, Vernon]

Hi everybody

Here's a peculiar problem.
All of a sudden, users.rrd, procs.rrd, la.rrd and clock.rrd have stopped
updating.
Actually, it happened on Friday, but I still haven't found the cause.

Is there a common script that updates these 4 rrd graphs?
Or something else common to these four graphs only?
All my other graphs disk, cpu, memory, the lot, are all working fine.
These are a mixture of Solaris and Linux clients, so I suspect it's not
a client-side issue.

I thought it may have been corruption of the files, but it seems
unlikely to happen for only those 4 rrd files for all 300-odd servers.
All four stopped updating at exactly the same time.
Naturally, the graphs are blank too.

Has anybody seen anything like this?
Any help appreciated.

Regards
     Vernon

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