I had some problems with an old Windows Live profile that was linked to a Yahoo e-mail account, so I created a completely NEW profile with a Hotmail e-mail address, synced the phone with the new profile, and this solved the problems I was having with forwarding e-mails and such.
I then deleted the old Windows Live profile from the Windows Live site.
When I look at email+accounts on the phone the original profile is still there, saying it's not up-to-date; not a problem, I'm not syncing from it any more.
The problem is that when I look in my calendar on the phone my US Holiday entries are doubled-up, there's an entry from each profile, which is really annoying!
Is there any way of removing the entries from the original profile; a Hard Reset, a new SIM card?