Hi,

there has been another issue around webstatscollector---the software that produces the raw numbers for stats.wikimedia.org and stats.grok.se.

Due to a deployment regression, requests to Special:CentralAutoLogin/* have been counted since 2014-07-07, although they should not have been counted.

While this does /not/ impact per-page numbers [1], it results in overreporting of the per-wiki numbers. The impact of this issue strongly depends on the wiki (E.g.: jawiki: ~0.5%, ruwiki: ~2%).

The regression has been fixed in the meantime, and the corresponding bug is

https://bugzilla.wikimedia.org/show_bug.cgi?id=70295

Best regards, Christian

[1] So pages like

http://stats.grok.se/en/latest30/Main_Page

are not affected by this bug.