Thank you for your replies...
I have merdge all the vertises and it still dosent work. I double checked if there are any vertises lying around unmurged and there arent! i have attached an other picture with wireframe on to have a better view of the problem! On the left fingure it shows the probem cleary!The right fingure works just fine! I tried polugon cleanup and it all looks Greek to me and i am from Greece, imagine how that sucks! I tried more then a few combinations on polugon cleanup with no luck!