The site that I have at Dreamhost gets a good amount of traffic and uses MovableType. I was contacted by one of the support people about upgrading to the PS service because my site uses a lot of server resources. We emailed back and forth and I decided it would be worth the extra money for some added stability.
The change was made late yesterday and my site has been down since 6:30pm last night. When I checked the status in my control panel it says things like
"Your website does not appear in the Apache configuration file."
"Your home directory does not exist on your web server."
I've emailed support three times now pleading for help and over 15 hours later I haven't heard from them and my site is still down. Unfortunately this isn't the first time I've had to wait this long for help from support.
If someone contacts you to switch to the PS service or to change your account in any way, beware! You may find yourself in my shoes.
Very, very frustrating.