On several occasions I\'ve seen messages in the Communication window which I *should not* have recieved. These include GuildChat and GroupChat for guilds/groups to which I do not belong, /tells probably not meant for me, /says from characters apparently in other regions, and on one occasion a \"You tell...\" message that was obviously from someone else\'s conversation.
This happens infrequently, perhaps once in several hours\' play, and at extremely irregular intervals. From conversation, I\'m aware that other players have also encountered this. I\'ve noticed it in every region except the sewers, which I haven\'t visited recently.
I have also submitted this to BugTracker as
bug #635.