Ive used my iphone 3Gs (iOS 5 currently) for a very long time. my home button's sensitivity varies differently in a very inconsistent way. in the last 5 months orso, my home button acted very smoothly, and i only had to press it lightly for it to work. but everytime i used icleaner or restored my phone, the button's sensitivity becomes much harder to use, meaning i have to press it very hard for it in order to work. its sensitivity goes high again after varying time. Although this may be a very unlikely coincidence. Can you relate to this?