This drives me up the wall. I use skype a lot (both text and audio/video) and I have about 4 devices I use it on a lot. Every day I need to clear the unread count down so I see new messages.
So for example, say I've been working on my desktop all day and I've had say 200 chat messages through the day, when I go to my laptop/iPhone they are still shown as unread.
Any ideas :)?