Dynamics NAV 4.00 SP2 how do we know?

As I see it there were a couple of SP2 versions floating about out there. One had a problem with Comments in the code, another had a problem with Printer report margins defaulting incorrectly. How do we know if we have the correct SP2. Obviously the COmments are easy to find, but does someone know which EXE version we should be looking for?

And is the security issue on SQL2005 and the crappy synchronization of user rights corrected in SP2? I have not seen anything about it in the changes document for SP1 or SP2