hinge has come off

i also faced the same issue on a laptop bought 8 months ago... i closed the laptop on friday evening & when I opened it on monday morning, it was not opening easily, when I pulled a lil more, was shocked to see the left hinge come off. It was perfectly fine till the earlier day & dont understand how this came off suddenly. Luckily it is in the warranty & dell has agreed to replace it but if it happens again after warranty; dont know what i am going to do. Surprised that a company like Dell is having such inherent defects in its products and since they know that it is their design defect, they should be willing to replace it all through the product lifetime and not warranty period alone.