Tell us more about your installation. Was is server configuration? embedded? EAR or WAR? Seperate partition? Is the coldfusion service starting up as LOCAL SYSTEM or another user?
I've had CF11 trial for two weeks and I've have not had any easy installation process.
Also, I believe a week ago I had the same problem and I reconfigured (using the WSCONFIG.exe in cfusion/bin) the IIS server to 32 bit eventhough my system is 64 bit and using the 64 bit CF server. It was super easy to get up and running with coldfusion 9, but i don't know what changed, if anything, that makes CF 11 so difficult. The installation by default should just have everything preconfigured. The installation should take care of permissions, users, default passwords, default features, etc.