Something very similar happened to my girl friend, yesterday. In her case, and maybe yours, the entire anti virus was gone. If you cannot find Security Essentials, at all, try to reinstall. It solved our problem. My guess, its has something to do with the MSE update, dated April 28. Cant hurt to try.
BTW, good to see you again, buddy and wish you luck
EDIT: Your post shows that the object of the shortcut (the Anti Virus is gone, the same problem that we had).
The problem i had with my MSE shortcut disappearing has happened again. It seems
to be happening every time i add an update.
Any ideas how to solve this problem.
Do i have to update my computer every time that microsoft sends me an update.
This is what you do Cal.
Set your Windows updater to notify and not to install. Then when you get the updates, there will be one that says MSE Client update package. Right click on that one and then hide. Your problem will be over.
Once you set an update to hide, it will not install unless you unhide. I prefer to set my Windows update to notify. I like to know what I install in my computer. The choice is yours, however. Whatever you decide the problem update will not install unless you unhide.