>>http://www.microsoft.com/downloads/details.aspx?FamilyId=C04BCF8C-0944-49F0-AC2B-563518CE1D70&displaylang=en
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>>(Sorry if I double post this news)
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>Can Sedna by any chance be installed/used on top of SP1 ??
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>SP2 is no-go for meny people meaning that whole Sedna idea/effort might be badly affected (if not rocketed down) by low acceptance of SP2. This is just unfair.
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>What is the point in releasing Sedna, if SP2 end up being totally useless ?

Sure, why not. I didn't read EULA carefully and I'm not sure if this is installing on SP1 is prohibited. But Sedna should works with SP1 also.