mattdm,
you might want to try digikam. it still has some way to go (quite some way), but in some respects it is quite impressive allready. i now use it exclusively for the first phase of my workfllow (raw processing, including usm and such), and i am quite happy. some things still piss me off imensly
, but overall, i know of no better alternative (and it does use dcraw, underneath, so the quality of the conversion is pretty much as good as it gets)
what i like: live histograms, lighttable features (maybe i will also use them some day
), comprehensive set of tools, color management (hopefully i will get around to thoroughly understanding how this works, in general, so i can use it
)
what i dislike: levels adjusment is a bit weird (but i can handle it fine), preview of raw files is somehow idiotic, and couldn't figure out how to customise it yet (does stupid corrections, you cannot rely on what the thumbnail shows, must open in edit mode to be sure), kind of dislike the way it displays pictures in general (they look softer than they really are, for one)
the interface is overall much more digestable than ufraw imho (allthough overall ufraw is quite a nice effort itself)
one hint which will save you a lot of hedache, if you want to give it a whirl: symlinks. digikam will not just open files, it claims to have the pictures where it expects them to be (configurable ofcourse) and builds a database based on that. however, it does follow symlinks, thank god
hope this helps
ps: my appologies to the others for the offtopic