Comfirmed: CloudFlare Rocket Launcher can break IntenseDebate comment system
After several testing, I think I've come up the conclusion, that, the Rocket Launcher function in CloudFlare can break the IntenseDebate comment system.
If enabled, the comment system would failed logging in, despite that the cookies are fine.
So if someone see this, well, don't use Rocket Launcher when using IntenseDebate as the comment system. Don't know if it would break Disqus or other comment system though...