I have given them a little bit of time...
I've only been a customer since 02.16, and I haven't had stable discussion list mail since then. The longest it's gone without a glitch is a couple of days.
Forgive me if this is considered impatience, but I expect a certain level of service for my money, and I'm not getting it. I also expect that when someone tells me it's fixed, that it's actually fixed. I left my previous host because they couldn't keep the email system up and running.
I hate that I'm becoming that customer so early in my DreamHost experience, but I don't think I should be quiet just because of the super-cool server names... I'd rather have them actually work than look cool, but maybe that's just me.
Other than the discussion list issue, I agree. DreamHost rocks.