Pff. If my computer were that well built/organized/customized by myself, it's sure not going in to some "repair facility" for some minimum wage hack to mess with it. I'd be doing the repairs myself. Then again, I understand the level of incompetence in most tech shops and trust my work much more highly. That doesn't even take into account the possibility of them cruising thru the hard drive looking for stuff to copy for their use.