In psutils-1.17-11, the default media size for psnup, and presumably for the other utilities as well, is A4 instead of Letter. I believe it used to (correctly, for US distributions) be Letter. Either it should be fixed to use Letter by default, or it should be fixed to determine the media dynamically like a2ps does now.
It's fixed in 1.17-12
I will attach a patch making psutils locale-aware. My English is not the best one so please throw a critical look at my man-page changes!
Created attachment 24008 [details] Patch against psutils-1.17-12
Created attachment 24047 [details] Previous patch was erroneously (paper was determined but not propagated). Some cleanups also
It's fixed in 1.17-13. Thanks for the patch file