Version 0.9 of Thematic
was launched a few days ago. Because of this the PageDrop Theme is no longer useful and will be discontinued since Thematic now offers an out of the box drop-down menu.
After quite a success with my CatDrop Childtheme that replaces Thematic’s the main menu with a drop-down menu of categories, I promised a post and childtheme in the future that will do the same with the pages menu. Although a bit late on my promise here is PageDrop Childtheme!
In order to install it you have to download the Thematic Theme
(from which this child theme inherits all of the functionality), upload both themes (PageDrop and Thematic) to your server in the themes folder AND THEN ACTIVATE the PageDrop theme.
I hope that this will help you with your Thematic installation!