Wikimedia Bugzilla is closed!

while getting png images of <math> in jawiki, such as
http://ja.wikipedia.org/math/e/c/8/ec899f9494c41641710da3a5c2a12dcc.png
in
http://ja.wikipedia.org/wiki/%E3%83%96%E3%83%AB%E3%83%B3%E3%81%AE%E5%AE%9A%E7%90%86
squid returns following error:

If reporting this error to the Wikimedia System Administrators, please include
the following details:
Request: GET
http://ja.wikipedia.org/math/e/c/8/ec899f9494c41641710da3a5c2a12dcc.png, from
0.0.0.0 via yf1002.yaseo.wikimedia.org (squid/2.5.STABLE12) to ja.wikipedia.org
([unknown])
Error: ERR_ZERO_SIZE_OBJECT, errno [No Error] at Mon, 27 Feb 2006 10:23:11 GMT