Print selected pages

Hi there,

when I wanted to print selected pages of a long file a noticed the 
following:

This one works:
a2ps -2 --pages=1,2,3 -o out.ps big-big.file


and this one too:
a2ps -4 --pages=1,2,3 -o out.ps big-big.file

but this one prints all the pages on the top of each other:
a2ps -3 --pages=1,2,3 -o out.ps big-big.file

and the same with -6, -8 -9.

My platform is SuSE Linux 10.0, a2ps 4.13, the architecture is 64 bit 
Opteron.

Otherwise what is the correct form to define a range of pages? It is not 
in the document.

Cheers,

miklos