I have an HTC Desire z. I noticed a few days ago that the camera was responding really slowly. Then today it was worse and is taking 6 seconds to respond to anything. So much so I cannot open the options as it times out before it has opened.

I cannot see the view finder image properly as it is not refreshing smoothly. Also when I try and close the camera it appears to not close in the background and the last view finder image appears momentarily each time you move between applications.

Is this something anyone can advise on or is the only option to return the phone.