A few weeks ago I had my kitchen reskimmed. I haven't got round to emulsioning yet but I've noticed three hair-line cracks have appeared in the ceiling. They're each no more than 1m or 1.5m and, as I say, only very fine line cracks. The plasterer came back and looked and said that you couldn't ever be sure of preventing such cracks appearing and that I should just polyfilla over them and then sand down. Does that sound reasonable? In any case I don't think I'll do that but rather just apply some Polycell Crack-Free Ceiling paint and emulsion over that, as I think any polyfilla would gradually fall out due to movement above upstairs. Any comments or advice would be very welcome.