When I connect my iPhone to my computer, iTunes only SOMETIMES opens up. I would say it's less than half the time. I know the computer is seeing the iPhone because the "disk drive" box that pops up (that shows the photo directory) ALWAYS opens and I see it in device manager. I have uninstalled and reinstalled iTunes numerous times and it didn't help. It's a Windows 7 64bit PC. The phone is jailbroken but it did the same thing before the JB.