I still have not heard from Apple regarding the open case I created about this problem...by way of clarification, this problem exists, in my instance, whether I'm trying to print over the wireless or ethernet networks. I have an HP LJ1200, Photosmart B8350 and C4780, all hosted by an Xp box and all of which had no problems on previous version of OS X over my networks. (Again, all my printers are fine when connected to the MAC via USB.)I found the following article in the Apple KB which lists printers that are supposed to be supported in Mavericks. http://support.apple.com/kb/ht3669
I am by no means an expert, but given the posts I have been seeing about similar problems, it suggests that this is not a driver problem, but rather a fundamental difference in the way Mavericks handles network printing, but I am sure there are other opinions.
BTW, I can connect to the hard drives on the host machine and move files from the MAC to the Xp box with no problem. I sure hope Apple fixes this in a hurry, and, the first time!