While trying to move a large translatable page on Meta, I get a "Wikimedia Foundation error" page, with the following detailed message:
If you report this error to the Wikimedia System Administrators, please include the details below.
Request: POST http://meta.wikimedia.org/wiki/Special:MovePage/Research:Wikipedia_Editor_Survey_August_2012/Questions, from 126.96.36.199 via cp1007.eqiad.wmnet (squid/2.7.STABLE9) to 10.64.0.132 (10.64.0.132)
Error: ERR_READ_TIMEOUT, errno [No Error] at Wed, 17 Oct 2012 22:20:08 GMT
The error is reproducible by going to
https://meta.wikimedia.org/wiki/Special:MovePage/Research:Wikipedia_Editor_Survey_August_2012/Questions , entering a new page name and clicking the "Check if the move is possible" button. It has occurred every time I tried to move this page (three times over a time of more than a month). The page currently has around 274 translation units, and completed translations in around 11 languages, i.e. the move would concern over 3000 translation unit pages. The error page appears around 30 seconds after clicking the button (as a very rough estimate).
The move page says "Failures will be logged in the page translation log and they need to be repaired by hand", but there is no entry about the failed action in https://meta.wikimedia.org/wiki/Special:Log/pagetranslation (nor did it leave a trace anywhere else on the wiki, including https://meta.wikimedia.org/w/index.php?title=Special%3ALog&type=move ).