My girlfriend forgot the password for her MacBook (don't ask), so I reset it using the Utilities.
But as you may be aware, this doesn't reset the Keychain password. Her MacBook is now virtually unusable due to Keychain demands continuously provoking a request for the Keychain password.
There are lots of other people asking this around the web and they're usually pointed towards this Apple support page, which doesn't apply in our situation because the support advice involves entering the old password.
We don't know the old password.
Is it possible to reset Keychain without knowing the old password? We're not bothered about what's in there and what will be lost, we just want the continuous password prompts to go away.