Getting rid of "1 new messages" in my Inbox

I received an (unwanted) PM a week ago. I have read it, but at the top right of the forum screen it still says "1 new Messages". Before this particular PM, this always changed to zero after I had read a PM but this time it won't go away.
Is there a "Mark Read" or something I am missing?

And on a related topic (once this is fixed), can the forum be changed so that if the number of new messages is non-zero, that message is displayed in a different colour, e.g. red?

Pete

el_supremo:
I received an (unwanted) PM a week ago. I have read it, but at the top right of the forum screen it still says "1 new Messages". Before this particular PM, this always changed to zero after I had read a PM...

That's how it works for me. Is there an earlier message you have not viewed? Maybe you were sent two and the second is on an earlier page.

I only have 5 messages and have read them all. I'd like to keep them for now, but if I have to I suppose I could delete the lot and hope that cures it.

Thanks.
Pete

I received another PM yesterday and now the message count is back to normal.

Pete