Post-Tabs is probably not enqueing jQuery correctly. You can disable the Superfish script via the following settings.
[quote:2wy6cofu]The settings you need to change to are:
Speed of fade-in effect: Instant
Mouseover delay (milliseconds): 0
Hide delay time (milliseconds): 0
Sensitivity: High
Enable keyboard accessible menu?: untick
Enable arrow mark-up?: untick
Remove title attribute? untick[/quote:2wy6cofu]
A new version I’m working on will make this process much more straightforward as many others have had similar problems with jQuery conflicts like this.