Why do my facebook friends disappear ?

[Be]

My facebook friends disappear ! I can't find them back. It looks like as if they block me or deactive their account so I did ask them for that but they said they didn't. They say that they also find me disappearing from their friend list too and they can't find me back. We search for our past comments on each others' wall and all we see each other name is as a black typing! It's like some invisible blocking between us so what's wrong? and how to fix it?
Thanks !

[Just A Canuck]

It's just a glitch. It will go away in a while. Facebook is having a lot of glitches right now. Just give it time, a few hours or a few days, it varies.