The day after the release of Itunes 11 I posted my ATH.EXE is behaving correctly again on my Windows 7 64 bit Core i7.
I'll say that is still the case, however, I saw ITUNES.Exe was now eating more than 60% of the total CPU. (that is more than 2 threads at 100%) After further investigations with process monitor (free from sysinternals) I could see that Itunes was exploring my entire photo library ... which is very big. Even when there was no device connected (directly or via wifi).
As I saw it was moving ahead without touching the same file twice, I though I could leave it overnight.
This morning I could see that CPU was still at 25%, but this time it was Apple Mobile Device Service, after restart this service CPU went finally down.
But I could not sync any device anymore. So I restarted Itunes.... and guess what.... it is now exploring my entire photo library again !!!
Relevantly, I have a mac mini with OSX Mountain Lion, and I have to say there itunes is always been flawless... But the insult is that there it has been a 64bit application since a long time already, while in Windows remains an old-fashion 32 bit.
Also, the old problem of itunes sync failing to synchronize any device when more than one user is logged in has been reported since ages ago, and it remains there. Note itunes itself can only run at one user session at the same time, but even like this it does not work.
Again, the worse insult is that in OSX you can run itunes simultaneously in several user sessions and sync always works.
Conclusion?
PS: The option to enable network share your photo library is gone. Given the active exploration of all my photos... what does this mean? that it doesn't do it anymore, or that it cannot be disabled?