Pcbnew plots PostScript in wrong orientation

If I plot a layout with pcbnew via File -> Plot and use PostScript as my format then the resulting .ps file has an incorrect orientation. In page settings my paper size is set as A4 and orientation is portrait. The resulting .ps file has an orientation of landscape. Here is an excerpt from the .ps file:

%%BoundingBox: 0 0 842 596
%%DocumentMedia: A4 842 595 0 () ()
%%Orientation: Landscape

If I try to print the resulting file the layout is not positioned correctly (as you could expect) so I have to modify the file with inkscape to get it to print correctly.

I'm using KiCad 2012-03-24 BZR 3477 on Ubuntu 11.10, 4GB memory, geforce (G92) 8800GTS, g++ version 4.6.1-9ubuntu3, wxwidgets version 2.8.11.0-0ubuntu10.