This is not fair Dreamhost delated my posts...
If you want to install Drupal 7 on Dreamhost - you may need to use different hosting. We keep struggling with dreamhost support for a long time now. They installed for us Drupal because the watcher kills the processes all the time - it was impossible to install it, not mentioning running the site - so sloooow. It's not about our scripts - it's genuine simple Drupal installation that has the same problems. I have 3 pages based on Drupal but performance is so bad that I can't show it for my clients. They can't help us so they blame Drupal. Guys - take a look WHO uses Drupal: http://egressive.com/article/who-uses-drupal .
Whitehouse, BBC, Ubuntu, IBM, AOL, Harvard, CERN... Everyone uses Drupal. So wake up Dreamhost! Help us or tell your customers they can't get what they deserve.