When I open my ical (CALDAV) calendar on my laptop there is, in the left most column, a listing under "On My Mac", a listing that is a check box and a name made up of (only) a long list of 1's and 2's (prob 25 digits).
Under that is a second heading with my Mobileme calendar items listed. The MobileMe calendar has my info and works fine. That info is synced to my other computer and iphone.
What is the item under "On My Mac" there for? It doesn't do any thing and nothing changes if you check or uncheck it. I can't delete it or change it.