Long time rox user. I'm having issues with it on a few desktops (opensuse 12.1 x86_64, kde) and that issue is with drag and drop.
It just doesn't work... the mouse icon changes like it will... it just doesn't bring up the action menu on mouse button release.
2.10, 2.11 from zeroinstall as well as git source all have this same issue.
I haven't a clue what's wrong, any help?
I've seen this with rox & kde4, some change in the kde 4.8 series introduced this i think. A not entirely satisfactory work around is to use left button to copy middle button to move.