There are quite a few answers which are essentially saying "install a different Linux distro". Here's one that's problematic for other reasons, but the poster appears to be attempting to be helpful: [System runs slowly](http://askubuntu.com/a/138095/8844).

But still, it seems to suggest the technical fix is to switch distros.  Is this acceptable? 
This particular answer is basically a long comment, anyway, but based on http://meta.askubuntu.com/q/2378/8844, I am inclined to think that answers suggesting using a different OS aren't real answers.  Should I flag them as non-answers, not welcome, or maybe just downvote them?