I was whispering with another player when suddenly it said he was offline, but he was standing right in front of me. I could see all the messages he was sending me but when I tried to send him one back, it said he was offline, and he didn't receive it. I tried logging off and back on, but the matter wasn't resolved until he himself did the same. Now it's merely curiosity that makes me want to say something about it. Does anyone know what happened?