Problems on a Macbook Pro

[bchan009]

Hi!

I'm experiencing problems recording and playing back sound on my Macbook Pro with Reaper - the sound always clicks, pops, and stutters. I saw something on the FAQ about increasing latency, but I don't think that's the problem...my laptop has a an Intel Core 2 Duo. I don't have these problems when using Audacity, so I don't think it's directly hardware related either. What could it be?

I really want to be able to use Reaper as an alternative to Pro Tools, so that I don't have to keep going into the lab to edit sound (I'm a film/television major at NYU).

Thanks!

EDIT:

System Specs:

Mac OS X 10.5.1
2.4 Ghz Intel Core 2 Duo
2 GB RAM