Comment 10 for bug 906952

> But unfortunately it seems that the problem is only reduced but not resolved.

Reproduced with Inkscape 0.48+devel r10922 on OS X Lion (64bit).
Same as with the first sample file: after removing the stroke from the spirograph spline and using a solid fill instead -> no delay when editing / transforming an additional simple (stroked or filled) object.

No such issues with Inkscape 0.48.2: the rectangle can be grabbed and dragged across the canvas without noticeable delay.