What happens during Windows refreshing the icons on your desktop?

What happens during Windows refreshing the icons on your desktop? I have many icons on my desktop. From time to time the symbols change from their normal one into some kind of "white standard icon" and than suddenly turning back to the normal icons, slowly, one by one ... When i refresh it, by pressing F5, it works instantly.
Asked by: Guest \| Views: 280

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Guest [Entry]

"From time to time the symbols change
from their normal one into some kind
of ""white standard icon"" and than
suddenly turning back to the normal
icons, slowly, one by one ...

i suppose Windows is rebuilding the Icon Cache while when you press F5 it is only reloading the layout from cache."