My Safari 2.0 RSS links seemed to have stopped updating – this general “delete prefs” fix worked.

“So, sometime Friday, Safari RSS stopped working for me. I have no idea why. I tried emptying the cache, going into Safari RSS prefs and clicking Remove Now to remove all the old articles. Nothing seemed to work. Today, I was chatting with Scott and he said, “Did you try deleting the prefs? That’s the first thing I try with funky problems.”

So, I closed Safari, went to ~/Library/Preferences/ and found com.apple.Safari.plist and dragged the file to the trash. Then, I relaunched Safari and re-enabled all the prefs that I like, like View—>Show Status Bar, and then went into Safari—>Preferences—>RSS and clicked the Remove Now button again. Ta-da! Safari RSS works again!”

http://www.tuaw.com/2005/05/22/tiger-tips-what-to-do-if-safari-rss-stops-working