Last modified: 2009-09-02 18:58:41 UTC
An attempt to access non-existent revision: http://en.wikipedia.org/w/index.php?diff=400000000&oldid=300000000 incorrectly reports $1 = "Main Page" in the error message [[MediaWiki:Missing-article]]. It should probably report "(unknown page)" instead.
*** This bug has been marked as a duplicate of bug 17669 ***