Ok! A Happy Ending!!! *phew*
I ran AppleJack, and since then, everything's been as sweet as pie! Everything is working perfectly, and at blazing speeds!! Aperture can handle my (reasonably) large image library with its eyes closed and one hand behind its back!
I haven't had the spinning bbod since! I have no idea what was going on before! Maybe the system just got bogged down with all my new app installations and music/image/video libraries being copied and what not!
Thanks everyone for you help and suggestions in my time of need! Much appreciated!!! You've saved yet another Mac user's sanity! Hahaha!
Cheers everyone!
I'm glad my suggestion solved your issues!!!! your totally welcome...i feels nice and rewarding to help someone!!