After ios 5 is installed on my devices, will there be a way to disable the iCloud syncing on a iPad2? A friend of mine owns a iPad2 but no computer so I set it up for him and I do his backups and updates which links his iPad to my iTunes account.
We won't know until iCloud is available.
Your friend needs to establish his own iTunes account.
iTunes: How to set up an iTunes Store account (Apple ID)
Yes, iCloud backup is optional. If you don't want to use then do not select it in your iOS5 settings nor your iTunes.
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