A couple of weeks ago I did a clean install (Leopard) on my 3-month-old Early '08 MBP and have replaced the previous Kingston 4GB ram with a brand new Crucial 4GB because the Kingston one appeared to be having some issues (which now I'm starting to believe that it didn't!!). Anyway, just an hour ago I turned my MBP on and the fans etc started working, yet the screen remained black. It wasn't until about 15-20 secs later that the initial chime and the Apple logo showed up!! It bothers me, as I know this is not how it's supposed to be. I haven't been too happy with the speed of this computer/hard drive for a while anyway. For example some times the "colored spinning ball" appears when opening certain apps, or several times an app hung. I've also experienced Firefox freeze when opening 20 tabs - I don't think this should happen on 4GB RAM!! I wish this was merely the infamous "10.5.6 bug" that lotsa people complained about, but I'm not too sure if that's the case. What could be the problem? Possibly hard drive? Or what?