I updated to the new "final" (as opposed to beta) .667 this morning, with no major programs. My only real objection is that this time around (or maybe in the past too, but didn't notice it then) they strongly urge a "clean install", which means program permissions and other settings have to be done from scratch.
New version doesn't (yet) seem to recognize Cookie Pal, simply blocked it without even asking (and it's not even on the program list as blocked, oddly), I had to add it manually. Not a big deal while browsing, since I use Firefox anyway, but CP also handles cookies set up by other internet-related apps like Eudora, ICQ, etc.