Decided to delete my whole site and start over because I had the problem that a lot of thumbs and images would not load. New install of ZenPhoto, uploaded en bunch of stuff and it all worked like a charm! No problems at all.
Until I decided to check "Make cached file names unclear" under Options/Security ... and old problem is back again: at random thumbnails and images are not showing. I did uncheck that option but no luck: at random thumbs and images are still just not showing anymore :(
Refreshed database and metadata: no luck. Both in Internet Explorer and Firefox the same problem.
So, I don't know why or how but as soon as I make use of the
"Make cached file names unclear" feature, it all gets screwed up somehow. It's just the normal ZenPhoto, latest version. I did not manually alter any PHP things because I do not know my way around that.
So gonna delete it all again, will install ZenPhoto again and start all over ... and I will keep far away from the "Make cached file names unclear" feature.
PS
I will keep it online for a while so you can see what I mean. URL is http://www.3dart4u.com ... and again: this happened *after* I did check the "Make cached file names unclear". Unchecking it does not help, removing cached files is also not helping.