Today I uploaded a replacement of http://commons.wikimedia.org/wiki/Image:Nuvola_apps_important.svg
The image is used in MANY places.
The first upload attempt just went to a blank screen. I tried again and got an error like: "If reporting this error to the Wikimedia System Administrators, please include the following details: Request: POST http://commons.wikimedia.org/wiki/Special:Upload, from 0.0.0.0 via srv6.wikimedia.org (squid/2.5.STABLE12) to commons.wikimedia.org ([unknown]) Error: ERR_ZERO_SIZE_OBJECT, errno [No Error] at Mon, 20 Mar 2006 20:42:02 GMT"
I then noticed that the image was actually replaced with my new version, yet there is *no* record of my change anywhere on the image page or in the upload log. I've tried at least half-a-dozen more times with the same error each time.
I find it more than a little troubling that the image was replaced with my new version, and yet there seems to be no record of it.