Over the last few days, the primary "recent questions" RSS feed (possibly also other ones) has included questions that are in no way recent.
For example, this question was last edited Jul 14 at 11:58 (and asked Jul 14 at 8:18), but the RSS feed lists it with an updated timestamp of 2011-09-05T23:06:50Z.
<entry> <id>https://scifi.stackexchange.com/q/4558</id> <re:rank scheme="http://scifi.stackexchange.com">6</re:rank> <title type="text">"Pure" versus "Hybrid" Daleks</title> <category scheme="https://scifi.stackexchange.com/feeds/tags" term="doctor-who"/> <author> <name>gunbuster363</name> <uri>https://scifi.stackexchange.com/users/1801</uri> </author> <link rel="alternate" href="https://scifi.stackexchange.com/questions/4558/pure-versus-hybrid-daleks" /> <published>2011-07-14T08:18:13Z</published> <updated>2011-09-05T23:06:50Z</updated> <summary type="html"> [...] </summary> </entry>
There is an answer that is recent. However, the "recent questions" feed has previously meant "recently asked or edited" and not "recently asked, edited, or answered". If this is a 'feature' change, then (a) the name is increasingly inaccurate (how does adding an answer make a question "recent"? Even editing is a stretch), and (b) this is significantly less useful, because it means this is no longer an efficient method of reading all questions posted to the site, because the number of old questions in the feed will overwhelm the new questions (even with our little beta site, answers outnumber questions).
I've observed this behaviour on a number of other SE sites as well, so this is not scifi.se specific.