One thing I noticed about Backgrounder...
I have the double click on the home button set to open Ipod controls. However, when I have backgrounder installed, the phone is locked and the screen is off, double clicking the home button doesn't bring up the iPod controls, it just stays turns on the lock screen. I have to triple click to get the iPod controls to come up. However, if the lock screen is on, I can double or triple click to get the iPod controls. But, if the phone is anywhere else, I can double click to get the iPod controls. If I triple click, it opens the iPod controls for a split second and then closes.
I think this has to do with the way Backgrounder takes over the home button, but it would be nice if this could be fixed.