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When connecting to network drives (e.g. using ExpanDrive) every operation takes a long time.

I've discovered this is due to the Finder trying to render an icon preview of every music file and PDF it encounters. Over the network, this can take a long time.

I know I can turn off icon previews on a per-folder basis using the "View Options" dialog. Is it possible to change these settings globally?

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The "View Options" dialog has a button that reads "Use As Defaults"

Perhaps setting it no previews as the default is what you're after?

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This button doesn't seem to be available on Snow Leopard. Or am I looking in the wrong place? – Frederik Apr 23 '10 at 13:21
In the Finder, in a given folder, press command j to bring up the dialog window. At the very bottom of it should be the button -- just checked it on Snow Leopard. – Nerdling Apr 24 '10 at 18:09

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