I spent 2 hours last night incorporating the Custom Menus feature into our Genesis theme to take advantage of the SEO-related capabilities on this site - http://christiancoachinstitute.com/
This is a WordPress 3,0 "glitch" more than Genesis-related glitch.
This are the steps I used to create a custom menu so that I could keep short titles in the navigation area and use more keyword-rich and SEO-friendly titles on the Pages:
1. Created a custom menu and by default the short titles were the same as existing short titles.
2. Went to each static page to re-write a more keyword rich and better SEO title. - the problem is that as I did this, each longer title appeaded within the Navigation Bar. I would have to then quickly save it in the page setting, go back to the Menu area and change the now longer navigational label to be a shorter label.... actually, change it back to the shorter label that was there before.
I call this a "glitch' because site visitors would see a longer navigational label for a minute or two as it was being converted back to the shorter label..... AND it is wasted time to have to go back and make changes.
I am preparing to rearrange the menu/submenus on http://www.faithandhealthconnection.org and using this process I described above will take a much, much longer time as there are more pages to work with.
So, I hope you bright and talented folks at WordPress can make this process more efficient.
Thanks so much!