Ouch. I've been running an Atom D2500 as a home router / lightweight server since forever with no problems.
Unfortunately I don't think the motherboard allows 64 bit linux, and since 32 bit support is going to disappear in a few years I should be upgrading. I just have no idea what to :(
That's not as easy as it sounds. A few years ago I bought a Q1900 board and there are stability problems which might come from the hardware: https://bugzilla.kernel.org/show_bug.cgi?id=109051