Poking around, my thoughts. I tested it out a bit on Safari. Also, I'm colorblind, so some of my comments may reflect that implicitly.
* The font size for a lot of the text is a bit too small. Maybe increase it a point or two.
* Top right corner says "Account Status:". Clicking on it overlays a box underneath it that gives my account status. The colon being followed by nothing is confusing. It did not suggest that I should click Account Status to get that info, which is what I assume was intended. It made me wonder "what isn't there a status?". It should have a clearer indicator that you should click to get your status. I'm also not a fan of the drop-down it gives because it blends right into the page. The drop down needs to contrast enough with the page that it looks like something different. Giving it a different background color might help that.
* Tag Cloud: Doesn't make sense. We have a heirarchical navigation system on the left, so it's faintly redundant. Here's what I'd rather see: Let us customize overview to become a portal page. Let us pick which links should show up there, and maybe give us little widget things we can use for our frequently-used actions. Give us the option to always load there when we visit panel.dreamhost.com. Then, give all users a basic initial set up based on what most users seem to like. That would actually be useful. However, I still think it's overkill since we have a heirarchical list on the left which is easy to use.
* The Account selector (bottom of left column): Interface is a bit confusing, especially with only two accounts. Nothing else in the interface is underlined (except "Account Status:", see above), but my non-selected account is. That made me think my non-selected acccount was the selected account initially. The faint yellow arrow to the left is a much more subtle visual clue than underlining. I recommend you get rid of the underlining and consider making the selected account a bit more distinct -- perhaps a background color, perhaps a less faint arrow.
* Suggestion Panel: Unvoted on suggestions have a "thumbs up"/"thumbs down" icon. Voted on suggestions say "You voted on this! [Remove vote!]". I mostly like the icons, but they are a bit faint and hard to see. I dislike the other thing. For voted comments, give the same two thumb icons but make the active one blue or red, to show it's been activated. Put a third icon in for removal, perhaps an X. Make sure the thumb icons stay aligned when you add that.
* Billing - Manage Account: The tables' rows have very, very, very faint colors in the background to distinguish one row from the next visually. Being colorblind, they're invisible to me. My non-colorblind friend said he could only barely see them. Please make this color visible so that I can more easily navigate tables. I shouldn't have to use a straight-edge to figure out which "Actions" icon goes with which domain. (Also, make sure the colors alternate per-row, not per group of rows. Alternating per group is less useful for visual navigation when the group contains many lines.)
* Account Priviledges: The text "Web ID's <name>'s access priviledges to "<name>'s account:" is smaller than "Revoke all priviledges for <name>." The revoke text should be smaller and should look more like it falls under the section it belongs in. As it is now, it really stands out far too much, confusing the interface.
* Manage Domains: I really like the new look for the table here. It's much cleaner and clearer than the old one, if I recall it properly. My only complaint (and it's a major complaint!) is that, as with the earlier tables I pointed out, the rows are too faintly distinguished; for me, the alternating background color is invisible.
* Manage Users: The icon for "webftp login" does no clearly symbolize "webftp login". In fact, I had no idea what it was for until I happened to hover over it -- which isn't necessarily an obvious action to take. Your icons should be obvious, otherwise they're not as useful.
* When you click a link in the left navbar to visit that page, the link displays some info text underneath it after the page has loaded. This is backwards. Once I'm on the page, I can look at the page to see what it does. Each page has a summary at the top of its function, anyway. Those little tips in the navbar are useless once they show up. They just clutter the interface. The only real benefit they give is that they very clearly indicate which is the active item in the navbar. Without them, the arrow alone would probably be fairly easy to miss -- the colors aren't that contrasting. However, I would rather you make the active selection more visually distinct than see you keep pointless helper text. If you really want to keep the helper text, have it show up in a floating box when you hover over menu options -- but then be sure to give us the option to turn the feature off, because it'll drive a lot of us nuts.
* Manage Email: The icons for "activate" and "deactive" are too visually similar. They also do not symbolize well what they do.
* Webmail: The domains without active service are interspersed with those that have it. This makes the interface more confusing. Seperate them into two lists.
* Junk Mail Filter: See "Manage Email" above, regarding icons.
* Manage MySQL: Again, the table does not have clear row indicators. If I scroll to the middle of my listing -- I have no idea whether "Add User" goes with the database above or below unless I'm really paying attention. I also find it interesting that you decided to label the icons here, but did not elsewhere; and also, decided to list them vertically rather than horizontal. It makes the icons' functions clear (and they wouldn't be clear, otherwise), but it makes it look kinda awkward somehow.
* One-Click installs: Table row issues, as above.
* Bandwidth Usage: The "Actions" column contains one action: a link to bring up a detail report. That's not an action, it's a link. I'd name the column "Reports" for better clarity.
* Disk Usage: Same as Bandwidth Usage.
* MySQL Usage: Same as Bandwidth Usage.
* Contact Support: I don't like the interface for the top sections, where you click a heading and a new sections pops up. Many of the sections are very small, which makes it kinda silly. The few sections that aren't small, seem too big to be squished in this page. Split this up or something.
* Consider adding a link to the Wiki in the quicklinks area in the top right.
* Please, use some software that tests how your site looks for people with various forms of colorblindness. There's plenty of free software out there for exactly that purpose.
Despite all my criticisms above, I think the overhaul is a good move. Most of the site is pretty good. There are some noticeable improvements, and I'm very glad that it's been standardized now, which I hope will more easily facilitate future improvements.
