Zencart slow on Dreamhost?

[polarduality]

I installed Zen Cart for a customer who uses Dreamhost.
Since the beginning the store has been extremely slow.
Right at this moment, the pages are actually loading a little faster. The site was down for a couple of minutes so I am guessing the server restart is helping the page load time.

http://whimsychick.com/store/

I'm just wondering if anyone else has had this problem with Dreamhost as well.

I want to recommend to my client to move to a different host but I want to be 100% certain that Dreamhost is the problem. Or I atleast want to be able to contact Dreamhost to make them aware of the problem.


I wanted to make sure it wasn't a bad configuration so I installed 2 additional Zen cart stores on separate hosts. No products in either one.

1. Clean install on dreamhost server. Clien'ts server.
http://whimsychick.com/catalog/

2. Clean install on Site5 server. My server.
http://www.polarduality.com/zen/

Pages do seem to be loading quicker with my host, Site5.

Any info/help would be greatly appreciated.