For some reason apparently logged actions get done twice... https://commons.wikimedia.org/w/index.php?title=Special:Log&page=File%3AAfrican+Cup+of+Nations+2012.png I just reverted once: two reverts.
... I think I did not click twice.. ;-)
Also noted: the revert takes ages (~ 30 seconds to 2:30 minutes) to return (browser waits...). The long revert duration was confirmed three times (with two different browsers (FF10 and Opera11.6) and accounts) by me at https://commons.wikimedia.org/w/index.php?title=File:AaatestSonnepalmenstrand-portrait_new.jpg&action=history
Reproduce: Just do a revert to a previous file version at this test file and see what you get. Note that the revert is done "fast". Just it takes ages for the server feedback.
In case it is a Europe-only problem: I am in Germany.