Initial report is at:

http://lists.wikimedia.org/pipermail/wikimedia-l/2013-November/128911.html

Webstatscollector has been updated to filter Special:CentralAutoLogin/
(commit 0d7af935f989d5c539a4d2febde93ea0ae62571), and since 2013-12-03 the
new version of webstatscollector is deployed.

The last full file of the old webstatscollector is:

http://dumps.wikimedia.org/other/pagecounts-raw/2013/2013-12/pagecounts-20131203-190000.gz

The file of the switchover is:

http://dumps.wikimedia.org/other/pagecounts-raw/2013/2013-12/pagecounts-20131203-200003.gz

The first full file of the new webstatscollector is:

http://dumps.wikimedia.org/other/pagecounts-raw/2013/2013-12/pagecounts-20131203-210005.gz

Filtering of webstatscollector between mid July 2013 and 2013-12-03 is still
to be done.

Prioritization and scheduling of this bug is tracked on Mingle card https://mingle.corp.wikimedia.org/projects/analytics/cards/1301

Filtering is complete. See also this analysis/validation of results:
http://tinyurl.com/pmm66v4

(In reply to comment #3)

Filtering is complete. See also this analysis/validation of results:
http://tinyurl.com/pmm66v4

Error: TinyURL redirects to a TinyURL.

https://docs.google.com/a/wikimedia.org/document/d/1kpJrfataS5KAxGXFoygQVhMlzFftjsvX9HktSAAKfrQ

Thanks for spotting and fixing this.

Could the note about this correction also be added to the other pages on stats.wikimedia which are affected by this, e.g.
http://stats.wikimedia.org/EN/TablesPageViewsMonthlyAllProjects.htm ?