Fail to Save Default Actions

[kclama]

Recently, the default actions (e.g home key, launch photo viewer, launch browser) of my Xperia Arc fail to save, even I tick "Use by default for this action" in the "Complete action using" menu.  In fact, the default action had been save for a short while, but after several min, the default will gone and the "Complete action using" menu appear again.  The build # of my phone is 4.0.2.A.0.62.   Pls help.

[Nabeel]

It may be due to third party app, such as task killers, battery / juice defenders antivirus, etc etc

Try uninstalling them and see if it makes any difference

[kclama]

Thanks info. 

The problem finally resolved after I turn on and off the setting of allowing installation of non-market apps.