I bought this monitor in March 2011, directly from Dell Canada. It had been working fine until some stain/cloud developed under the screen within the past few months. It looks like water stain but the monitor has never had water spilled onto it, so it's really odd. The stain is more visible in some colors than the others. What's causing this problem? How could I get it fixed? Thanks.
Here is the a picture showing the issue: http://imgur.com/mQscw8c