Apache error log showing very strange problems

I was wondering if anyone 开发者_如何学Ccould point out what is causing the problem in the screenshot attached. It has happened a couple of times with different images. I can't see what is causing it.

The machine is my development machine.

I was hoping to post this on serverfault but I can't add the image I need.

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Not enough info yet, so just some debugging steps.

1. Try uploading it to a different machine and see if you get these same messages.
2. Check you don't have any Javascript doing anything with image urls - to me it looks like some loop somewhere might be going 'wacko', but could be client or server side.
3. Use tail -F on it in the terminal and refresh the page to see if the appearance of those entries coincides with the loading of the page.

Edit: maybe also have Firebug/etc open when you refresh the page with their Network panels open to see if you really are sending those requests. Really just want to find if it's a client or server issue to begin with.