I've got 5.3.13, and the client is crashing out ("process becomming a zombie") occasionally.  I want to upgrade the client to 5.3.15.  Is it ok to run a 5.3.15 client with a 5.3.13 server, or do i have to upgrade the server, and all the clients simutainiously?  (i want to avoid this if possible, in case my "upgrade" breaks stuff, that way i haven't taken down the whole network, just one instance)

Thanks

Corey