Upgraded from 11.10 to 12.04 graphics problem, intel graphics card, problem in viewing images

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http://askubuntu.com – recently I have upgraded from ubuntu 11.10 to 12.04. After uograding, when I try to view some of my pics, they are faded out and some patches are appearing in some places of the image. I dont know how to solve this issue, I am new to Linux environment. Please suggest me some solution. Thanks in advance. (HowTos)