I have installed the new Norton Utilities 15 (v15.0.0.122). When I run the 1-click optimization in the new SpeedDisk utility (Disk-Optimization, Boot Optimization, Real-time Defrag) and reboot, Apple's iTunes (latest version 10.1.1.4) resets itself:
When I start iTunes I get the wizard setup screen asking if I want to add music to the iTunes library, if i want to make it the default media player and have it organize my music, and resetting other features etc. as if I had just installed iTunes for the first time. I suspect iTunes is attempting to repair itself on launch.
This problem did not occur when I used Norton Utilities 14 (no SpeedDisk) together with the above version of iTunes a few days ago before upgrading to Norton Utilities 15. I am running Windows 7 Home Premium.