My ipad2 home button was intermittently becoming unresponsive. Here are various things I tried after talking to Apple support and reading up various support threads.
- Hard reset. For this hold power button till you see slide to power off. Then release power button and press home button immediately. This did not work for me though.
- Then I re-provisioned ipad2 and erased all the data. This fixed the problem for sometime. But it reappeared again.
- After that I pressed the ipad2 just below the home button. This fixed the problem for me. So far things have been working fine since last 3 days.