Console warnings on load not reproduced with Inkscape 0.48+devel r10516 on Mac OS X 10.5.8 (i386), compiled with '-g -O0', default new preferences - tested with attached sample file, 'Advanced' tutorial from the help menu as well as a newly created file with linked offsets of a star, a simple bézier path and a text object.
(Displaced - shifted - linked offsets of the attached sample file confirmed with default new preferences file, seems unrelated to the console warnings seen on Ubuntu 10.10)
Console warnings on load not reproduced with Inkscape 0.48+devel r10516 on Mac OS X 10.5.8 (i386), compiled with '-g -O0', default new preferences - tested with attached sample file, 'Advanced' tutorial from the help menu as well as a newly created file with linked offsets of a star, a simple bézier path and a text object.
(Displaced - shifted - linked offsets of the attached sample file confirmed with default new preferences file, seems unrelated to the console warnings seen on Ubuntu 10.10)