Simple notifier problem

Hello,

I just install uddeIM, nice
I install the mod "simple Notifier" and it's work but...

When I receive a new message, I have the notification with the 1 and little letter blinking.
but if I read the message, I delete it, the notification stay...

I try to delog relog but the notification stay.

You have an idea ?

Thanks a lot.

I found

It's just because I put a unread message in the trash