In case you use LimeSurvey with Cloudflare, you may want to disable Rocket Loader, which "automatically asynchronously load all JavaScript resources." In LimeSurvey it causes problem saving questions (the save button does not do anything), disables tooltips for buttons in the administrative interface (so the icons are hard to interpret), and maybe causes other problems.
If you are not sure whether Rocket Loader is enabled, just look at the HTML source. If it is enabled, you will see "rocketloader" in the HTML source.
Cloudflare's Auto Minify seems safe to use.
I tested with LimeSurvey Version 2.05+ Build 141229, Firefox 35, and Google Chrome 40.
