sensor problems

so it started messing up quite recently and I originally thought my sensor was dead but after some playing around I realized it doesn't mess up during videoing stuff. so I was wondering if anyone could enlighten me on what is happening. iv linked an image. (btw iv tried resetting and im also...

Hi All, I have a Nikon D90 which I've had for 6 years now. It's been around the world several times and dropped, knocked and bumped about. However, it's performance has been flawless until about a month ago when I noticed that the edge of all images was blurred. It looks as iff I've applied a...