Argh. My Thinkpad’s power socket must have received a knock during the move. It no longer works with either of the two power bricks I have here — so it looks like it’s time to either (a) buy a soldering iron and some screwdrivers (incl Torx ones?) or (b) renew my IBM warranty service and send it in for some fixing :(
Bad timing.
Update: oh look, it’s working again! phew. I guess I should probably set aside some time for warranty service here anyway though…