When visited links look unvisited

Something’s bothered me for a while about sun-sentinel.com’s links, and today I finally figured out what it is. The site’s CSS makes “active” links look like normal links rather than visited links. Let’s say I’m on the home page and I click a link to visit a story:

Now, after I’ve read the story, I use the browser’s back button to return to the front page, where the story I’ve just read does not appear to have been visited:

Only if I click elsewhere on the page, to “deactivate” the first link, does it properly change to the color for visited links:

This problem doesn’t seem to happen in Netscape browsers, but Internet Explorer apparently keeps links in the active state even after you leave the page and return. The Sun-Sentinel should change its style sheets so active links have the same color as visited links — or another color entirely — but not the same color as unvisited links.