Notifications

Hi, I have a Notification and when I click on it says 1 New message recieved.
Yet when I click on that it just goes to a couple of old messages and won't remove the "Notification:1" title..???
This only just happened after all this hacking stuff... Any Ideas..??
Cheers..

Also, now i only have 4 posts, and whenever I want to reply to something it goes to a new screen and I have to input a "Image Verification" to post..????
Bizzare....