@Alex - can you zoom out and see if they are below the page borders?
Attaching screenshot from Inkscape 0.48.0 on OS X 10.5.8 (TypicalASV.svg opened in new window, unconnected connectors are displaced as described in comment #4). Distance of the vertical displacement differs depending on whether a new document window is opened or the current (unchanged) document window is reused.
@Alex - can you zoom out and see if they are below the page borders?
Attaching screenshot from Inkscape 0.48.0 on OS X 10.5.8 (TypicalASV.svg opened in new window, unconnected connectors are displaced as described in comment #4). Distance of the vertical displacement differs depending on whether a new document window is opened or the current (unchanged) document window is reused.