Update: Problem solved, maybe with a rusty crowbar rather than a scalpel, but solved none the less
in my user account's home directory did a Ctrl+H and trashed the following folders. log out, log back in and viola! no more weird hold overs from 10.04. Looks just like a new install, and faster too! Sure I had to reenter my wifi passphrase and repopulate and rearrange my dock but small effort to pay.
Why did I delete the above? According to Google(tm) they were all either outdated, or applied to Gnome2 user settings, or Gnome3 user settings, and several threads about resetting gnome desktops to a fresh state recommended these.
Also these searches mentioned removing .metacity .dmrc .thumbnails and anything .compiz ... Also saw some commands like "unity --reset" but many complaints that this did not work or had other side effects. Also there was a post by Jorge Castro over on askubuntu.com that is a little too intangible for me. It's quoted below. Thankfully I had to do none of this and it worked like a charm just removing what I removed!
The current answer(s) are out-of-date and require revision given recent changes.
Didrocks told me there's no easy way to do this in 12.10, however he gave me some information to figure it out, the ideal answer will script up something like this: "gsettings list-relocatable-schemas | grep compiz", then note down the relocatable schemas then gsettings reset-recursively <each schema from the list above>:/org/compiz/profiles/unity