I have not noticed that and I have not seen any other posts here with that problem. Maybe your Home button is sticking
- If you have iOS 5 and later you can turn on Assistive Touch it add the Home and other buttons to the iPods screen. Settings>General>Accessibility>Assistive Touch
- If not under warranty Apple will exchange your iPod for a refurbished one for:
You can do it an an Apple store by:
or sent it in to Apple. See:
Just to be clear, the home key always continued to work. Pressing once returned me from an application to the home screen and double clicking brought up the multi-task display. What had changed was the sequence of screens on repeated single clicks. I.e. starting from within an application it no longer went from application launch page -> first home screen -> search page etc.
That said, now that I know that this was not an intended feature, I powered the touch down and back up again. This appears to have solved the problem. Thanks for responding!