Yes, it's very stable for me. Currently got a LAMP(Linux Apache Mysql phpmyadmin) install on it, plus webmin. Definitely need a swap file if you are going to run a lot on it. I went with 1GB for swap. Use this link as the process on the main Arch Linux wiki didn't work for me: http://archlinuxarm.org/support/guides/ ... g-swapfile
I'm thinking of moving my music collection and using ampache + MPD, that will have to wait till hopefully a working USB_SND module is made available for the currently kernel.