Comment 6 for bug 620486

The displacement of the unconnected connector lines re-occurs every time their parent group is transformed (moved, rotated,etc.). Only workaround for the moment to allow continued work with the grouped objects in Inkscape 0.48 seems to manually remove the attribute 'inkscape:connector-type' of each unconnected connector line (i.e. those without 'inkscape:connection-start' and 'inkscape:connection-end' attributes).