Semen2.jpg file was deleted by Szczepan1990 after a community vote, initiated on June 23rd.:
http://commons.wikimedia.org/wiki/Commons:Deletion_requests/Image:Semen2.jpg
In a few hours' after the deletion, a user initiated an undeletion request and despite a few voices pro and one heavy opposition (and not even a word of comment to add to that), the file was undeleted after 20 hours (!). I broke the vote back to the previous status, because of his doubts over the process. After revert file was undeleted again and ShakataGaNai blocked me for a week.
Such files are very delicate in terms of building a (preferably positive!) image of the project, i think. If a user (Richiex, http://commons.wikimedia.org/wiki/User:Richiex) converts Commons into a self-pseudo-pornographic picture gallery with own private parts, this calls for immediate reaction. Additionally, files that have their equivalents of a better quality ought to be removed in my opinion. If my statement is called vandalism... Multichill wrote in my talk: "Dear Szwedzki, please see the deletion guidelines. You deleted several pictures which are in use at wikipedia articles so clearly in Commons:Scope.". Oh yeah: "Private image collections and the like are generally not wanted. Wikimedia Commons is not a web host for e.g. private party photos, self-created artwork without educational purpose and such. There are plenty of other projects in the Internet you can use for such a purpose, like Flickr and others."
regards szwedzki http://commons.wikimedia.org/wiki/User:Szwedzki