It's not your imagination. AOL Search is now apparently using Inktomi results for its main listings, relegating the Open Directory's presence to having category-only links appearing at the bottom of the page. The switch happened last week.
It's a big blow for the AOL-owned Open Directory, given that AOL Search was the largest distribution partner it had. The Open Directory continues to provide the main results at Netscape Search, and it is also the data used for the Google Directory.
AOL couldn't talk about the change yet, but I'll be following up about the switch for a future issue.