ok, i spoke too soon. Sure the problem is with me, but dont know what it is. I signed in fine on the iPad. walked away for a moment, came back and was signed out. Now I try to sign in and the little bar at the top goes all the way across, the page refreshes and am not signed in. I've tried automatic fill your password, typing them in manually, turned it off and back on, everything I can think of. I did update yesterday, but had the problem both before and after.
Any suggestions would be appreciated - and on the iMac i'm fine.