Skype goes offline and needs password again

[gayleard]

I'm running Skype 2.8.0.920 on a Samsung Gallery S2.
Skype works fine; but it goes offline after about 20 minutes,
and next time I use it I have to enter my password again.

If I take Skype offline manually then my password is remembered
next time I start Skype.

I'm running IceCreamSandwich.

Any advice or suggestions gratefully received.