So I got the second one done, just deleted the old one and then installed the new one cleanly. Still a couple of issues, but it does seem to stem from XBMC itself. I can see that there are a lot of folders and files that are left behind even though you "uninstall" an add on. This is messy and should really be looked at by the team. I found numerous ones that at one time I had installed only to later remove, but low and behold the files are still there.
Once removing the "dead files" a lot of things happened more quickly like changes. No more pauses for no reason, maybe as you mentioned, the database trying to work things out, but all that extra stuff does not help.
Another strange feature is the kiosk again. Maybe just my system (both now), if enabled, you cannot use the curser to bring it up. It is now;
Movies - the up and down arrows. Up = brings pop up, Down = closes pop up
T.V. - right arrow = brings up pop up, left arrow closes pop up
Again, many thanks and great eye on the way you created Back Row!!!