Hi, I am having the same issue. The two-deep links lead to an "internal server error" page (originally said "no input file specified" but then changed once I started fiddling around).
I have searched the forum and read the threads related to the topic and nothing has quite worked for me, including trying to enable clean URLs by changing MODREWRITE to true in options.php, adding the / to my htaccess file, and changing my php options in godaddy. I tried renaming the htaccess file in my root folder to .htaccess, but Cyberduck doesn't seem to recognize the change, or maybe it does, but it still looks like htaccess. I'm running out of ideas.
I am new to Indexhibit v2 and have very little programming experience, so step by step answers would be the most helpful to keep the threads shorter.
My site, chiaozza.com, is being hosted under eternitystew.com, so the URL looks like this: chiaozza.eternitystew.com.
Thanks in advance for any tips.