iTunes slow computer down?

[Dynasty]

I installed iTunes a couple hours ago, and played around with it. And deleted it off of my system, and all of the other files with iTunes. Searched comptuer to get everything off. Well since then it seems as if my computer is runnin alittle slower. And when I start my computer up, it seem sto take alittle longer to boot-up. Is it just my head playing with me? Thanks

[MusicManiac]

Nope, my mega-music library's getting in the way. I might delete everything. Things do go slower because iTunes takes awhile to load.