Ditto, no problems with 10.4.7, but its unlikely that upgrading will instantly fix your network problems. Although, we don’t anything about your computers or how you are connecting them, it is possible if you upgraded them all to 10.4.7 it might be easier to setup your network with some of the built-in network troubleshooting tools. But without complete details there are way too many variables to even guess at what would help you.
Tony!