Option Multiviews not allowed here

root@helen:/etc/apache2/sites-available# diff /root/d7.ls.net /etc/apache2/sites-available/d7.ls.net
8c8
< AllowOverride AuthConfig FileInfo Indexes Limit Options
---
> AllowOverride AuthConfig FileInfo Indexes Limit Options=All,MultiViews

Drupal 7 requires Multiviews which, quixotically, is not a member of the set All.