Comment 4 for bug 534468

not reproduced with Inkscape 0.47 r22583 on OS X 10.5.8 when printing to file via the print dialog (tested with PDF and PostScript output): page size is respected for SVG document page size 25x25mm as well as 30x30mm.

(probably not related to your problem: the rendered page size of the test PostScript files depends on the viewer used - Apple's Preview assumes a default page size of US Letter, whereas GhostScript 8.70/GhostView renders the page bbox as the page size that was set in Inkscape).