Depends. If you're just sitting there with the sail down they won't be real tight; if the mast is leaning one direction (say, to port) then the starboard one will get a little slack in it. This goes away when you raise the jib and tension all the shrouds. Then when you're out on the water in a stiff breeze you'll notice that the leeward shroud is loose again.

If the mast doesn't feel like it's going to pop out of the mast step then I wouldn't worry about slack shrouds.