Yeah......you don't want to get rid of those processes. They're pretty vital. If your CPU is being worked more than usualy (90% shouldn't be constant) then you likely have a problem.
I had the same situation and then I cleaned out the registry with ccleaner. My computer ran as if it was new afterwards. It's a free program...
i know its not a process you wanna kill, but it starts taking up soooo much cpu i cant do anything, my system freezes and i have to manually shut down and restart. if i kill it before it takes up all those resources im ok