I know some out there are thinking "Oh no, another 'my icons are moving' thread from someone who hasn't looked for previous posts", but this is different as far as I can tell. I have gone through every Desktop Icon related thread I can find, and this seems to be a new problem.
I will try to explain...
First off, this happened out of the blue, which is what makes me nervous. I normally keep my icons to the left, with any open projects or new things to the right, and I keep my Recycle Bin at the bottom right as well. I will often save an image temporarily on the desktop, then when I am done I will drag it to the trash. This is something that happens just about every day, usually more than once a day. A couple days ago I tried to drag a picture to the trash, and as soon as it started to move it disappeared, and I was dragging an empty cursor accross the screen. Then I noticed that the picture was now located in the upper left corner where I keep my "My Computer" icon, having pushed the My Computer icon down a notch. The whole row was moved down, with the bottom icon moved to the top of the second row. Which ever icon i try to move, it gets put at the top left. I end up having to move all the icons in the right order to get them all lined up again. What puzzles me is that I made no changes, but now I can no longer move any icon, or drag any icon to the trash.
I do have the "Align Icons to Grid" checked, as I always have. When I uncheck that and try to move an icon, it starts to stack all the icons on top of each other in the upper left corner, almost off the screen. When I re-check it, they all move back, but the same thing happens if I try to drag them. I do not have the Auto Arrange Icons feature checked, and I never have. I can right click the icon and delete it that way, but can't drag them to the trash, nor can I drag them to any other spot on the desktop.
I have looked here, and I spent a coupe hours on Google and I could not find anything with this problem being explained. I can't be the only person this has happened to, but I can't find a solution or explanation anywhere. If anyone can help I thank you sincerely!