This has been a bit of an issue for at least a couple months now but feels like it's getting worse. Every time I save a change on a banner (whether I'm adding a message or not) it takes an incredibly long amount of time (Upwards of minutes at times) and sometimes times out completely. For example my most recent save ( https://meta.wikimedia.org/w/index.php?title=MediaWiki:Centralnotice-template-PrivacyPolicyDiscussion_Standard1&diff=prev&oldid=5769136 ) ended in a time out and the error pasted below. As far as I can tell the edit DID save though when I went back to check.
Request: POST http://meta.wikimedia.org/wiki/Special:CentralNoticeBanners/edit/PrivacyPolicyDiscussion_Standard1, from 208.80.154.77 via cp1002.eqiad.wmnet (squid/2.7.STABLE9) to 10.64.0.130 (10.64.0.130)
Error: ERR_READ_TIMEOUT, errno [No Error] at Mon, 02 Sep 2013 07:25:31 GMT
Version: unspecified
Severity: normal