I was getting the endless wait for liddles.net, but could get to a specific page (e.g., liddles.net/?p=3), but now I get this:
Error 500 - Internal server error
An internal server error has occured!
Please try again later.
Though, that was only for a moment. Now, it's back to the non-resolving loop.
The "500" error suggests that there's an error in one of the configuration files that Apache (the software on your web host's server that actually "serves up" the web pages). Though it could be related to the PHP processor.
Since this is happening on two domains, this seems more likely to be a pure server configuration issue, but you'll need to some testing first, to make sure.
The first place to check for Apache configuration files is the root of your domain. I see that on liddles.net, you're use pretty permalinks, so WP should have generated a .htaccess file in the root (or, if you installed WP in a subdirectory, in that directory).
Rename the .htaccess file to something and try accessing your domain. If the problem stops, then the issue is probably some setting that is contained in that .htaccess file.
If that stops the issue, go back to the Permalink settings page in the Admin Panels and update the permalink structure so that WP can regenerate its .htaccess file. If you don't do this, WP will continue to use pretty permalinks, but the Apache web server won't know how to process those requests.
If none of the above fixes the problem, then turn pretty permalinks off and switch to a default theme and deactivate all plugins. If the problem still occurs, then we can likely rule out something that WP or a plugin is doing.
Then, this is probably an issue related to your webhost's server configuration (maybe they just upgraded something), and you should ask your host's support for help in further isolating the problem. But, you need to do the above things, first.
EDIT: I was able to get http://www.liddles.net/index.php to come up, but it seemed to take thirty seconds at least, but since I had that going in a background tab, I wasn't paying attention.