As I'm bringing the moved linux-ix-slaveNN up in scl (bug 638309), I'm seeing .ssh owned by root, which makes it hard to fix the keys. Probably an easy puppet fix.
IIRC that's related to bind mounting ~/.ssh for scratchbox's benefit.
WONTFIX or INVALID?
It's perfectly valid, I'm just not working on fixing it.
This will be fixed by bug 548551.