Contest sites are still slightly incomplete. PS/PDF support was temporarily removed for reasons of access security; it should now be possible to download individual problem-texts as PS/PDF. The 'booklet' option still needs to be customised for contests, and is somewhere on our todo lists .
Other things contests lack at present include customised user's pages and contest-specific counts of the number of solutions (in the problem list). Also, you will run into trouble if you open a new window while viewing a contest, and within the same session try looking at more than one contest at a time.
All these features will probably only be fixed in the next major update of SPOJ, sometime in December.