Lots of "broken" seats on A330 last night??

Hi,
Apologies if this has already been answered somewhere...
Just flew in this morning from MCO to LGW (VS28) on one of the new A330's, sorry didn't get the reg! There was about 60 or 70 economy seats that were closed off with laminated placards saying "do not use" cable tied to them. Mostly the sets of two's on either side of the aircraft. Various rumors going around from the crew (not sure if even they knew the real reason themselves) ranged from the seats having the wrong bolts so not secured to the floor properly (?!) or the seat belts didn't work...
Any body have any ideas on what's going on with them? I'm guessing a lot of pax were bumped off on to another flight, or has this been a known issue for some time?
Cheers,
Dan
Apologies if this has already been answered somewhere...
Just flew in this morning from MCO to LGW (VS28) on one of the new A330's, sorry didn't get the reg! There was about 60 or 70 economy seats that were closed off with laminated placards saying "do not use" cable tied to them. Mostly the sets of two's on either side of the aircraft. Various rumors going around from the crew (not sure if even they knew the real reason themselves) ranged from the seats having the wrong bolts so not secured to the floor properly (?!) or the seat belts didn't work...
Any body have any ideas on what's going on with them? I'm guessing a lot of pax were bumped off on to another flight, or has this been a known issue for some time?
Cheers,
Dan