Desktop Icons Are Still Returning To The Upper Left Corner

For an unknown reason after every restart some icons will return to the starting position in the upper-left corner of the desktop (Windows7_64ult), even though I previously located elsewhere. I.e. they are listed below each other, according to updated. It is not happening to all icons, but that on the desktop since few days back. Others are on their position where were before. I hope it describe clearly. Some icons simply don't want to remain at the position where I moved them before. It sucks a bit, can be done something about it? Thanks for any advice
Peter

 

Right click the desktop > View > uncheck Align to grid and/or Auto arrange icons

 

thx a lot Eathling... that's it what works for me.
Unchecked Align to grid and then checked again after restart and voila

 

Thanks for feedback