Since installing WordPress 2.5.1 I've noticed a bug which can be replicated under the following conditions (IE only);
When editing a post or a page, select a word or sentence.
With 'kitchen sink' turned on, use the text color button (second row, after underline and full justify.
The text will be colored, but a message stating:
Are you sure you want to navigate away from this page?
will be displayed.
Has anyone else observed this behaviour, and is there a workaround or solution?