I use dreamhost also and recently had this same exact problem. It was determined that the issue was that I had associated an email address that wasn't associated with a domain registered on Dreamhost (I had a gmail email associated with my log-in user, not an email associated with my dreamhost-registered domain), so they were automatically blocking the password reset emails from ever being sent, because they consider this "spoofing" in the system.

This is the page I ended up using to implement a solution - it was not easy, but it did work:http://www.concrete5.org/documentation/how-tos/developers/recoverin...

It was "Method 2" on this page that ended up working for me. The directions have a lot of steps, and every detail counts, so if you get stuck, re-read the directions again to make sure everything is right.

Hi CWIblog,

The easiest way I found is to change your email address in the Database, then just request a password reset email.

If you have access to phpMyAdmin with Dream host, this guide I did shows you in steps:
http://www.webhostinghub.com/support/edu/concrete5/get-started/rese...

I hope this helps,
John-Paul