Did the patch fail on any hunks? I'm thinking of config.def.h changes in particular. Did you merge changes from config.def.h into config.h?
I'm currently using pertag with 6.0 just fine (though you don't want a diff against my setup, as there are significant changes against mainline in mine in addition to pertag). If you'd like, I can pastebin/attach the pertag patch I'm using, though I suspect it's the same as the one on the site.
