Since version 7.2 of Ignition you are supposed to hold down to drag a container. However, if you try to do this in Ubuntu 10.10 (64-bit), you end up dragging the whole Designer window.
Wow, didn’t see that one coming. Good catch. That must be really annoying.
You can disable this ‘feature’ of linux as a temporary workaround, but we should probably have a better solution.
I’m not super happy with the alt-drag for containers, because it trips up new users pretty frequently. I’m hesitant to put back any sort of “center drag handle” either though.