Mikeiver1, what you said about trying Smoothwall, yes it was the first of the embedded linux firewall/router solutions i tried over a year ago and for me the easiest to set up...but i moved on to Ipcop and stayed with that the past year. I notice that Smoothwall just came out with version 3 so it should be good for anyone to try. Or, pound for pound, a good router also works, for those who prefer something a little smaller....
My recent try of Monowall is related to Naslite in that it gave me the chance to try booting it with the same boot options as Naslite to see what that was like. It has images such that you can boot it via hard drive, cdrom, or usb and i tried all three. I hadn't tried a usb boot before but with one of my newer pc's the usb boot option for that worked. As with freenas, i guess i still prefer the hard drive boot option and tony says on the forum that will be coming soon for Naslite. But i can see why some like the usb option, having tried it now. Btw, Monowall also seems a good firewall/router solution as is Clark Connect if you want apache, mail server or something more than just a firewall/router yet still being less complex than setting up a server..
Meanwhile , Explore2fs seems a worthwile program now that Kodiak has tried it with Naslite. And, thank god for open source while we trial all these things, including the free version of Naslite.. I'd be more broke than i am if i had to pay for everything in linux i ran a trial of, and if i did, i just wouldn't try most of them. Then, once you know what you want, some are worth paying for, and fortunately some of these i mention offer an open source version also..
I noticed somewhere in all this that someone mentioned Xandros Server for using as a nas and other things. I looked it up since i've used Xandros 3.0, 3.02 & 4 by now among my other linux distros. But, oops, it cost a little less than $500 for use on one computer, and me not being a corporate user, i think not, but you can run a free trial of it if you want for 30 days...