I used this plugin with the Suffusion theme, version 4.2.8, and it caused title attributes to display when you hover the mouse over the navigation bar. Also, the title attributes included html code snippets in addition to the page titles themselved. Suffusion includes an option to hide title attributes, but this plugin seemed to override that setting. I resolved the issue by deactivating this plugin and going with a different one that does the same thing (by Kristen Larsen). The other plugin works great and doesn't cause the title attributes to display.