[ um... freedombox people... tell me... why was the shitty little NDA-loving armv5 marvell sheeva guwwu pwug chosen over the freedom-respecting really rather dishy little IMX53QSB? i realise it's good to break marvell of their paranoia habit but even so... ]
Well, there is one very good thing about the Marvell SheevaPlug, and that is that every bit of hardware in it is supported in the mainline kernel, including the crypto engine. And there's no GPU over which to grind the usual axe. I don't believe the Freescale have as much mainline support, so technically, as far as OSS support goes, Marvell is pretty good. Whether that is through Marvell's contribution or not I don't know, but in terms of what the end user gets to work with, it's seldom matched and hard to beat.
Gordan