It's going on Hiatus again after 280. 271 had a "It will continue uninterrupted for 10 chapters" Thing like before. It'll probably start again in 3 months, like last time. Togashi wrote how he was sorry for taking so long last time in that intro to Volume 25.
There's no way the whole story could end in 10 chapters, it's not mathmatically possible, at the rate things are going. There are many many many loose ends in this story. Lots of characters and open ended plots that haven't been reprieved yet. He said he wasn't going to make the same mistake that was make with Yuyu Hakusho, because the last arc was severely shortened and the story ended. Herein though, it's impossible.
Also, the head guy from NG left, apparantly, hasn't been online at all since a week or so before 271 came out. And a spider can't live without it's head. That, and they had a really small staf to begin with. Then later on, the whole staff basically stopped going to the IRC channel because one guy started acting stupid. This one guy on the staff who doesn't do anything but run the channel made something so you could only get the release URL there, and you needed to win a !spin command script thing or something… which is idiotic, especially when you're not the first pick for a release.
And there's probably more, that's all I heard. I only used to help find raws.