Still present and reproduced in Inkscape 0.48+devel r9854 on OS X 10.5.8, steps as originally described (tested with r9854, default preferences and default template)
In the attached file select the red and green rectangle, open the 'Align&Distribute' dialog and click on the first of the three 'Exchange position' buttons in the 'Rearrange' section.
(crashes consistently using a local debug build -- r9854 compiled with CFLAGS="-g -O3 -Wall" -- but also e.g. with r9841 from modevia)
Still present and reproduced in Inkscape 0.48+devel r9854 on OS X 10.5.8, steps as originally described (tested with r9854, default preferences and default template)
In the attached file select the red and green rectangle, open the 'Align&Distribute' dialog and click on the first of the three 'Exchange position' buttons in the 'Rearrange' section.
(crashes consistently using a local debug build -- r9854 compiled with CFLAGS="-g -O3 -Wall" -- but also e.g. with r9841 from modevia)