[X4U] The host is down (iTunes)

[Paul Moortgat]

After an upgrade yesterday I suddenly get this message on the iMac from my wife her iMac (10.6.8)
when I try to go to the iTunes Store.  For the rest iTunes is normal.
The host is not down on my Mac.
I trashed iTunes on her Mac and replaced with the one from me also 10.6.8.
The message is the same.  I also trashed some prefs.
What else can I do?

Paul Moortgat