Attempt to login to Ubuntu One in Thunderbird

After installing 11.10 I have encountered a number of problems, one has been solved the rest are for a separate question.

Currently my Thunderbird application works fine, but in my wife's account every time she tries to traverse the folders tree she encounters, at each change of folder level:

"Enter password to unlock your login key ring. The password you to log into you computer no longer matches that of your log in keyring".

When she cancels out of that window a new window appears with:

"There was a problem opening address book "Ubuntu One" - the message returned was: cannot open book: Could not create DesktopcouchSession object".

Anyone know what this is about?

When this first occurred I noticed that an Ubuntu One item had been created in the Thunderbird folder list during the upgrade. I deleted this but the warning continues to appear at every folder selection.

regards,
John