Mountain Lion and iCloud log in
Since installing Mountain Lion on my iMac, I can no longer log in to iCloud in system preferences. Incorrect password. I did change my password in the process and can log into iCloud through Safari and on my laptop (not got Mountain Lion there yet). This also means I can't set up Mail properly. What am I doing wrong?
iMac 2.4 GHz Intel Core 2 Duo, Mac OS X (10.6.7)