Make sure your setcpu is set at a high number instead of it being set as the same number as the lower number. When you change roms more than likely your high and low setting on your setcpu (rom) is set to the lowest. this might be your problem..just a thought
I had this same problem and I thought it was the boot animation too. So I backed up my rom, then did a full system and cache wipe, 3 times each, then when I restored the same backup, walahh, smooth and fast as could be. Don't know why this worked but it did. And don't worry you won't loose any apps this way. They all get restored.
I dont think its hype. I think it's just something better than the original eye. As far as no boot...you can use root explorer /system/media and romove the animation but there is an animation under the one you just deleted. all it says is the Android logo. Takes same amount of time to boot.
Since nobody really answered you, Pete has a built in animation that you don't need to download. Simply execute the "droidboot" script. It's simple and fast. I have always preferred it over any of the others.