When I check the "active" questions, there are often questions included that are considered "active" because there were "modified N hours ago" and the modifying user is "Community". If open the question, I don't see any edit N hours ago, in fact most of the time the last activity was weeks, months or even years ago.
Can anyone please clarify what is going on here?
Personally I find it very inconvenient to see these long-time-inactive questions in the active stream, as sometimes I don't notice it's an old question until after I answer it :)