My iTunes regularly requires two or more syncs before it will actually sync anything to any of my i-Devices (with the exception of one of the shuffles). It will say 'iPod synced' or 'iPad synced' after the first sync, but upon turning on the i-Device in question, nothing has actually been synced, and having ejected the device to check it (as in the case of iPods), I must now reconnect it, and sync it twice.
This morning, while syncing an iPad, it said that the iPad had been synced, but examining the items which I had added revealed that only a 1kb shell of the video in question had been synced. A placeholder, with no actual content. It took as long, if not longer, to sync that shell item as it does to run the second sync.
Sometimes it won't take for more than two syncs, and needs three or four to register any changes. This error occurs whether it's just one single song or video, or 100+.
This error is not limited to this computer, but as this computer has the most number of items syncing to it, I figured I ought to start here.
Running Windows 7 (64 bit)
iTunes 10.7.0.21 (and don't like the lack of usability in iTunes 11, so would prefer to avoid that upgrade, unless it's possible to get hold of a skin to make it look like it does in iTunes 10...)
6GB RAM
AMD Athlon Dual Core Processor 6000+
And a good 580GB left in space on the harddrive with my library on it.
--though again, not just this computer.
Sync issue occuring on (in order of age):
iPod Nano 1st Gen 1GB
iPod Nano 2nd Gen 2GB
iPod Nano 3rd Gen 4GB
iPod Nano 4th Gen 8GB
iPod Classic 5th Gen 160GB
iPad 1 64GB with Data Connection (Whichever firmware came just before Apple Maps was added and Google Maps was taken off)
iPad 2 32GB wifi only (Whichever firmware came just before Apple Maps was added and Google Maps was taken off)
Error not currently occuring on iPod Shuffle 4th Gen 2GB on the first time it was synced with this computer rather than another in the house (loading approximately 12 items). Have not tested it on other shuffles in the house on this computer, but issue occurs on shuffles, including that 4th Gen one, on other computers.
I'm using an iPad cable bought from the Apple Store for syncs (obviously not including the Shuffles). This computer has no USB 3.0 ports on it, or I'd use that as well (although the 3.0 port has no change in the double-sync being required on our computer which does have a 3.0 port on it...)
Antivirus software is Spyware Doctor (paid), combined with Immunet Protect (free).
APS Daemon has been disabled, which has at least allowed the i-Devices to sync at all, rather than refusing to sync and then freezing the entire computer for up to three days (I'm not joking).
I've tried this with all non-critical functions and processes turned off in Task Manager, and the only program running as iTunes. No change.
iPads syncing wirelessly or cable-only makes no difference either (and having iPads on cable only while synching a different iPod to the machine makes no change either).
I am only plugging in one i-Device at a time.
Computer was last defragmented two weeks ago, and nothing major has been added since (although this is an ongoing issue, occuring over more than the last year, and has not been solved with other defrags).
Purchases to iTunes on all computers are limited to apps, no music. There are some podcasts and one video, none of which are being asked to sync to our iDevices at this time.
As an aside, clicking the shortcut to iTunes on the taskbar makes iTunes take fully ten minutes to start up, whereas rightclicking ths shotrcut on the desktop and selecting 'open' from the options, starts up the program in less than half a minute.
Ideas would be appreciated, this is getting silly. It should not take me more than half an hour to sync a single album to an iPod Nano (not including the time to turn on iTunes), or 45 minutes to sync a single ePub book to an iPad.
