The "List of Wikipedias" at http://wikistats.wmflabs.org/display.php?t=wp currently gives the "Grand Total" of articles on all Wikipedias as 38 571 517, which is about 11 million too high. Instead, it should be the sum of the numbers in the "Good" column, currently 27460406.
See also:
https://meta.wikimedia.org/wiki/Talk:List_of_Wikipedias/Table#Error_in_.22Grand_total.22_number_of_articles (as mentioned there, the bug first seems to have occurred around April 13)
https://en.wikipedia.org/wiki/Talk:History_of_Wikipedia#Over_26_million_wikipedia_articles
https://wikimediafoundation.org/wiki/Template:ALL-WP-COUNT
http://s23.org/wikistats/wikipedias_wiki.php
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