I have some odd difficulty by means of my computer. But my trouble is that a lot of of the installed programs is not visible after few days. After this notification I tried to install the software again and this time once more it informed me that I have previously installed this except I am not able to observe that anyplace within my computer. I want to ask that if there someone who faced the same difficulty? If you be acquainted with the fix, then please let me know that. Thank you.