We have a house that is three years old, and has several american boxwoods in the flowerbed out front. I have other flowering plants in there now, and all have been doing really great in past years, but all of the sudden my boxwoods are looking a little dry, then mostly dry, then dead, and whatever is doing it literally from one side of the bush to the whole thing, then to the start of another. we've lost them one by one gradually. I've treated, but have no idea why just the boxwoods are being attacked, or what it could be. Someone mentioned a root beatle? what could I do for that? Please HELP!

That looks like a possibility, as well as the other nematode option written about later in that same article. I've applied fungicides and such, but maybe for some reason this year my flowerbeds just aren't draining like they should be... I'll have to look into it:) Thanks!
(It's amazing to me that you knew where to find this. I had already tried a search for it:)