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Does Photobucket (or Acrosync for iOS) transfer files in the background? See this comment by the makers of another uploadtool:
"This is a restriction of iOS. All third-party applications on iOS, once they enter the background, have a limited amount of time to continue operations before iOS terminates the application."
Will a background sync that is taking, say, one hour succeed?
Comments
Pity. Do you have special provisions to warn users about the risk? For instance by notifying the users as soon as iOS has indicated that it will close the background app.
Or are you just relying on rsync's resume feature to start where it left off as soon as Photobucket is in the foreground once again?