I updated to WP3.5.2
I then updated my plugins
And then I got the "You do not have sufficient permissions to access this page." message.
As I was able to update the plugins, I tried moving all plugins to abackup folder. No joy. I also tried replacing them with pre-update plugins. No joy.
The website is live to users at http://smarttowise.co.uk but I cannot login, so I am feeling neither smart nor wise.
Several topics with the same symptom but cannot find any that started the same way and most say there are lots of possible problems, so any help will be very welcome.