I've been toying with the idea of a laptop for a developmental machine. Sure, it wouldn't have the horsepower, especially the disk speed, but wouldn't it be a joy to work on projects in a coffee shop, or at my girlfriend's house? Mmmm, sounds good to me.
My biggest hesitation has been in selecting which laptop would work on Redhat 7.2. There is a good website on this, something like laptop-on-linux.org or something, but it's a laborious process figuring out what to get.
I also haven't worked out what to do with CVS, etc... to coordinate my development with the production servers...