Closing this, seems that cloudmade fixed this on their side, if they get a roundabout tag it automaticlly implies it's oneway.
So you're right tomevans, no need for oneway tag. :)

hmm you're right, the "oneway=yes" is a quickfix for roundabouts made out of a single way, which aren't composed of ways to represent direction the traffic flows.
but it's way easier then editing all thoose ways :)

sorry, roundabouts missing the tag "oneway=yes"
I have made this script because i've been working with routing for OSM maps, mostly with cloudmade. If a roundabout is missing the "oneway=yes" then it will route you wrong through the roundabout.
Roundabouts should only have one direction, so it's not a mistake. :)