I am trying out lightroom and am really impressed. I do have a question though. Does lightroom run a little slow on your computer? When I am working in the develop some images load really slow. The ones that are using lightroom... do you still shoot raw or have you moved back to jpeg? I could really use some help on this.
Thanks

How much memory and what processor does your computer have?

Ditto what John said, and how much room is on your hard drive?

To answer your question: I shoot 99.9% RAW (I didn't want to say 100% because you never know!) and have no problems with LR.

Power Mac G5
Speed 2 GHz
Memory 512MB

I have 79.47GB available of my hard drive

If that's a dual processor system, then it should be fast enough. (A single probably wouldn't be.) But do you really only have 512M of Ram? I don't think that's enough even on a Mac.

+1, if that's all the memory you have, then that's why it's running slow. I'm running on a Core2Duo with 4GB of RAM and it's quick like lightning!

RAM plays a huge role. I went from 1 gb to 2gb of RAM on my old 1.67ghz Powerbook and noticed a huge speed increase.

I have 3GB of ram on my desktop and only 1 on my laptop...my laptop doesn't really run Photoshop or Lightroom fast enough at all, but the desktop does it all with ease. Sooo I agree RAM does make a big deal. I'm not a computer specs kind of person though. =) I shoot RAW.