cant open iTunes store 'NETWORK RESET' message

I had the same issue. Today I couldn't even open the iTunes store. I set up a support call and no sooner had I hit the button than the phone rang. After spending half an hour troubleshooting which included resetting Safari, I think we hit upon a solution. The tech had me move the iTunes preferences file to the desktop. When I reopened iTunes it recreated the file and everything seems to work fine now.

The file is located at: user/library/preferences/com.apple.iTunes.plist.

Don't delete it until you're sure the new one works. You'll have to walk through your iTunes preferences and reset a few things to the way they were before, but it's relatively painless. Good luck.

Never mind. I thought it was working because it's responding faster and I'm able to explore the different parts of the store (apps, music, podcasts, etc.) which I couldn't do this morning, but I still can't download app updates. Back to the drawing board.