This is very strange and new problem for me,
I found that as i clicked on mozilla/picasa/games/notepad... etc the visul studio screen in opning insted off that browser and all....
and showing the some package problem.
Worst thing is that in visual studio i start debug than the mozilla gets open and as i stop debug than mozilla gets close...
Please give ur solution asap to get outof this .
thannks and waiting for solution.
 OP's comment moved here after solutions 1 and 2 [/edit]
Thanks for ur help,,,, but it still not working proper.
I think i have to format my pc....