[Q] Home button not functional

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http://forum.xda-developers.com – After i unlocked by bootloader using the sony ericsson method on my unbranded xperia play the home button no longer functions but it does work. I can "wake" the phone with it it just wont return to the homescreen. i have not flashed the kernel or rom and i only deleted the junk game apps that come preinstalled. any way i can fix this? R800i android 2.3.4.. build 4.0.2.A.0.42 (HowTos)