This is mostly specific for OS X.
For picture managment I use Apple Aperture
which also can do some simple PP task (actually it can do quite a few, but I don't like the UI that much; but watch out, the next version could be much better)
Then there is Lightzone, this software was abandoned a while ago, but it is becoming an opensource project for OS X, Windows and Lunix (www.lightzoneproject.org
). I love the way this program works; it is very easy to handle and gives good results in a short time
And for doing some more work, like merging together different pictures and that stuff that is not "traditional" PP I just bought Pixelmator
; not really profesional grade, but it has the feature that I need, and it is rather cheap.
I think unless you really are a pro (which you obviously are not, since then you would be out shooting, instead of posting on the Canonrumors Forum [/kenrockwell]), there are many alternatives to PS which cost much less.