But you do realize that people will quickly stop using your website when it's sucking 100% load out of their CPUs?
My Intel E8400 Core2Duo yields 800 kHash/s = 0,8 MHash/s when under 100% load at both cores.
Given that not everyone will have such a processor (and/or be using netbooks, smartphones, tabs etc), that quite a bit FireFox-Users have No-Script enabled by default and that the creators of this JAVA app didn't code it that way so that the App locks down the User's CPU at 100% load, 50MHash/s sounds pretty reasonable in my opinion.
Sorry.
E8400 should pull 6-9 Mhash if using the ufasoft SSE2 CPU miner 6 if at default 3ghz... closer to 9 if overclock to 4ghz
I have this setup so i'm speaking from actual expereince, if you are also GPU mining using polcbm or phoenix, use the "-g no" to prevent ufasoft from doing GPU mining and fighting with the other GPU miner
I think the jscript miner need to be improve with ufasoft SSE2 mining code, also ALOT of people are still using VERY old CPU for web browsing... heck I'm typing this on a slow P4 right now