Apparently this resolved the problem. Having the same problem on one of my four Windows 7 installations, I am not aware of locking/unlocking the desktop, nor does Win7 Help give any reference to locking/unlocking desktop. Did you mean locking/unlocking taskbar? I have tried locking /unlocking taskbar, checking & unchecking under right click View 'auto arrange' & 'align to grid', deleted icon cache in AppData/Local, found the hard way that the icon spacing otions from Vista are no longer available.
I'd greatly appreciate any further help/suggestions.
Thanks for your reply.
I'm still not following. On my installation, right ckicking on desktop gives 'View', 'Sort by' & 'Personalize' as relevant options. 'Sort by' does not have 'None' as an option, but checking neither of the options would be the same thing & that's what I have. I do not have a 'maintain sorting' or similar option anywhere, that I am aware of. (Frustrating thing, at least two of the other three Windows 7 installation have exactly the same options set & there I can rearrange as I want.) The changes under 'Personalize' really only afect several icons which can be shown & what pctures are shown with them. I have changed all of those options several times, no change!