Well you can't multitasking on an iPad without both being jail broken and running backgrounder or another similar app. Just home out of it and the app closes. That's it on stock idevices. This is the main reason I want my 3.2.1 jb, multitasking..
Did you get this fixed? What did you do????
IMO, the iPad and all Apple i devices have an inherent memory leakage issue that causes applications to crash. Check out this thread:
Memory Leakage Problems for iPad Apps