App Store - An unknown error has occurred

Hi,
Trying to update OSX. When I enter to AppStore with My Apple ID it always says - "An unknown error has occurred".
I tried to create another account (as I read in some message form Apple Support) but it just keeps thinking, with no results.
I would like to update OSX, but I can't find the way.
Sílvia

Hi,
I used to do it directly from terminal.
mv /Library/Preferences/SystemConfiguration/NetworkInterfaces.plist /Library/Preferences/SystemConfiguration/NetworkInterfaces2.plist
mv: it will move file NetworkInterfaces.plist to NetworkInterfaces2.plist
Or you can go directly to the folder:
cd /Library/Preferences/SystemConfiguration/
and the move the file
mv NetworkInterfaces.plist NetworkInterfaces2.plist
hope it helps
S

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If you are having issues with the iTunes store, check out the article below.
Can't connect to the iTunes Store
http://support.apple.com/kb/ts1368
Thanks for using Apple Support Communities.
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iTunes 8.0.2.20
QuickTime 7.5.5
FairPlay 1.1.11
CD Driver 2.0.7.5
CD Driver DLL 2.1.1.1
Apple Mobile Device 2.1.2.7
Bonjour 1.0.5.11 (118.5)
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Video Display Information
NVIDIA GeForce 8400M GS
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Subnet Mask: 255.255.255.0
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DHCP Enabled: Yes
DHCP Server: 10.0.0.1
Lease Obtained: Fri Jan 02 00:03:53 2009
Lease Expires: Sat Jan 03 00:03:53 2009
DNS Servers: 10.0.0.1
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