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Icloud was nearly full of crap unwanted stuff so I went to settings and selected iCloud. I switched off all the on/off except photos and pressed delete contents (I think?). Deleting was taking ages so I shut the cover. When I checked to see if it was all deleted the setting screen was frozen. I switched ipad off - no change, then switched power off and on again (old standby) Still frozen settings page. No Ctrl alt delete available I guess? Any suggestions