All of a sudden, my Twitter and Facebook apps have mysteriously stopped working. They open, but immediately close, sending me back to my home screen.

Any idea why this has happened and what the solution is? Someone suggested restoring factory settings, but surely if that is the solution, I'll be needing to do that on a regular basis, as it wouldn't really be attacking whatever the fundamental problem is.

Both working fine on my Nokia.

Both working fine on my Nokia.

I have had the phone since September and have never had an issue or reset it.

What phone are you using?

This happens too sometimes on my HTC Titan. Try uninstalling and installing the apps again.