I just upgraded to Jetpack 2.0 using the upgrade option on the plugins page. Immediately, the drop downs on my main menus stopped working. They started working again when I deactivated Jetpack. I restored to Jetpack 1..9.2. and all works again. I have the latest WordPress 3.4.2 and using the Striking theme.
The blog I need help with is charterpartnersinstitute.org.