For JerryFromKrakow, thank you for the inspiration.
For kevinfromleitchfield, perhaps I should add that:
I face the same problem, with Windows XP but the difference is now that I downloaded iTunes 10.7.0.21.
The problem is definitely on the Apple Mobile Device Support that's been hogging 50% of the CPU.
This is what I discovered, experimented and did a moment ago:
1. Go to C:\Documents and Settings\All Users\Application Data\Apple\Installer Cache
2. Go inside the folder Apple Mobile Device Support 6.0.0.59
3. Right-click and Uninstall
4. Go inside the folder Apple Mobile Device Support 4.0.0.97
5. Right-click and Install
Voila.
The iTunes 10.7.0.21 runs as smooth as silk.
Give it a try and feedback please?
Cheers,
MT
From Indonesia-Singapore