Attempt to Update Widget on 2.9.1 results in error

[judy@…]

Go to existing widget on a sidebar. For example Categories. Click on drop down to see details. Change title. Press SAVE. Get this error and change is not saved: "Are you sure you want to do this?
Please try again."

[nacin]

I can't reproduce this on the 2.9 branch or trunk.

This error is the result of some misaligned WordPress security measures, but the code looks fine.

In that case, you have a plugin that is messing with this. Can you disable your plugins and see if that fixes it?

[azaozz]

Cannot reproduce it either. Sounds like the nonce is missing/wrong, could be plugin that prevents the nonce to be passed to the AJAX request. Disabling plugins or looking in Firebug to confirm the nonce is included should help determine the cause.