It has to use a shutter speed that cannot be compensated for by the image stabilization. The only option is to kick in the double IS on that camera. If that doesn't work then it's just too dark.
My new Sony DSC H50 is showing vibration warning whenever the lighting condition is a little poor or artificial lighting is used! It shows such warning even in NIGHTSHOT mode!!! Is it a malfunction?? Plzzzzz help me out of this vibrating mess!!!!!