
The 12 pages of apps bugs hasn't taken long to appear on my iPhone 3G with iOS4 installed.
It happened after I dragged several Folders onto invisible pages then syncing the change. Doing this is a quick way to remove the apps from the Folders. Folders do not retain their structure if moved to an invisible page in iTunes. I placed the folders on the last invisible pages. There there 17 Folders in total before syncing. When syncing was complete I had the 12 pages.
Via PicPosterous
Via PicPosterous