Please come and reassure me that it's perfectly normal not to be rolling at this age... the various emails saying "Now your baby is 6 months old" all seem to say that your baby will be rolling over in both directions by now, but mine's not.
On the other hand he is sitting up unsupported for short periods which I know not all babies are at this stage. He's not making any efforts to move around at all yet.
I should be grateful that he's still immobile, shouldn't I? In another few months I'll have to chase after him everywhere, I know...