Hi
First try Safari from another User Account. When you open Safari, make sure RSS is enabled in the Safari Preferences>RSS. If you can access the feeds there then there may be corruption in either the database or RSS preference files in your Regular User Account. If no go here, then I suggest you reinstall Safari. See
this thread for directions.
If the feeds work in the other user account, go back to your regular User Account: Open the Finder: Your User Account>Library>Syndication folder. Move the database3 file to the desktop, then restart Safari. Try an RSS feed. If no change, move the database file back to its original location.
Then move these two preference files in your User Library>Preferences to the desktop:
com.apple.SyndicationAgent.plist and
com.apple.Syndication.plist
Restart Safari. Again, try a feed.
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