I dread to think what I'd find wading through the logs, it's bad enough trying to figure out what's going on in the here and now with a "modern" OS!
My first PC ran Mandrake Linux. By the time I'd finished fixing it, there were a total of 31 processes running when I was logged in with a graphical desktop. If I then ran
ps -A I could have told you what each of the 33 processes on the list did.
My current Wheezy box has over two hundred processes before I even run anything useful - and I've no idea why.