Yep, it's a huge problem: the pervasive rating system constantly needs fresh eyes on things to keep it accurate, so old questions don't get updated votes. To compound that, if you're a newcomer arriving via Google, you can't down vote.

So you, the freshest pair of eyes on the page, can see an out-of-date error, but can't correct it or comment on it. All you can do is leave another answer, which is doomed to sit at 0 votes.