This wasn't the only incident. There have been three or four incidents this week. Two Japanese airlines have grounded them now. You don't do that to your best money making aircraft without a real reason.
The 777 never had these kinds of problems.
Im aware of all the other problems they've had with the 787, my company has 20 on order so we're fairly well informed. Also I believe that todays wired world is why everything is instantly flashed around the world.
Remember the 777 was introduced sometime in the mid nineties I dont think we had that connectivity to advertise every incident. Also the 777 was pretty much done, at least to a degree, the old fashioned way, so why they actually did have their problems they were not as dramatic or as well advertised as things are with the 787.
Thats not to say that Boeing can just sit there, its pretty obvious there are some serious flaws with the manufacture that need to be sorted asap.