Currently Being ModeratedSep 17, 2013 9:01 AM (in response to Frank Muller)
Open Keychain Access in Utilities and try Keychain First Aid, from the Menu.
Currently Being ModeratedSep 17, 2013 12:23 PM (in response to WZZZ)
I tried that and it was little help. I deleted my Keychain altogether and now things seem better. I'll report back in a day or two.
Currently Being ModeratedSep 20, 2013 2:07 PM (in response to Frank Muller)
Keychain deletion and starting over was the solution for me. Browsing passwords are working. Mail starts without crying for passwords. And maybe the best part is that I'm no longer running out of RAM while using Safari and iTunes at the same time. I used to accumulate 2GB of page outs within 12 hours. Now after not restarting in two days my page outs sit at 708KB. I'm guessing a messed up Keychain was using up resources.