Hello John:
I forgot to mention that. I did disable the (WikiSEO) extension this morning.
The problem with the images recurred after I disabled it. Also, I
haven't had code in the wiki that would call the WikiSEO extension
since August 28. So, I am doubtful that this is the underlying cause.
I have considered taking down the citation generator... but I am
doubtful the problem lies there as it is a stand alone application.
Beyond that, I have awstats installed -- but that install precedes the
problem by several weeks and also is unrelated to MediaWiki.
Above stated, I have to do more reading to find more ideas about what
could be wrong. PHP memory settings is one idea. Memory something is
my hunch at the moment.
I will reboot the server when I have a chance -- see if that gets back
the images. I suspect this will temporarily make it seem the problem
is gone.
Thanks,
Michael