I neither work for DH or have low standards so I sincerely hope you'e not talking to me. In fact I'm trying to help you determine what the problem is, as are the others, if you'll listen and apply, not just listen for what you want to hear. It's not nice to call people liars that are doing you the favor of testing and reporting back to you! Be suspicious if you like but keep it to yourself and you might get more input in the future. I certainly didn't lie and I doubt very seriously that mattail did either, 3 hours later. So you've determined that your problem is intermittent for starters.
I just checked your site as soon as the email came to me that there had been a reply to my post, and indeed SLOWer than molasses (the first site you posted, the second came down instantly and fully). Took a few secs (2 maybe 3) to serve me anything beyond the white page (something I've come to expect from joomal powered sites) then boom! fast, everything but the images came down, the images came down all at once about 3 minutes later. Not acceptable I'd agree!
Now you've got to try and figure out what the cause of that is...
I saved the html source of your front page and viewed it from my desktop and web server after changing the file paths to get the assets from your domain and the same thing happened on each.
So you need to determine why your images are coming so slowly, on occassion and fix that. What you're doing however is just complaining apparently.
If you go to support with detailed determinations of what the problem(s) is/are, and keep a cool head, read responses carefully, wait at least 30 minutes for things to sink in before you respond, all that kinda stuff (basically keep cool and stay determined and nice)... you'll get to the bottom of the problem and solve it.
Dreamhost are pretty good about fixing such things tho their support can be a little trying depending on who you talk to for the last 6 months or so. Hopefully tho they're getting a handle on the power, router, dns and MySQL problems they've been having so that they can indeed get back to fixing stuff like this.