hmeah, you're totally right. iirc they did dig it up within the last 12 months. i think this time around it was electrics (EDF), whereas last time was (i think) water. at least they didn't work on the weekends, tho. it was very noisy - every morning as i lay in bed listening to the Today programme, as the pips for the 8am news started, the drills started. i swear they were listening to the radio too.
Great Dover St is lovely now. for the time being.
The prize for most pointless resurfacing i think goes to one a few years ago when i was living down off GT Dover Street. they resurfaced (no pipes laid or anything, just resurfacing) the corner of Trinity St and Falmouth Road, up to the barrier by Gt Dover Street. given that road traffic on that point was about half a dozen cyclists an hour, it seemed pretty wasteful.