Well, I've finally got the story together on what happened.
I was hosting QForge on a linux server cluster I had built. It ran along quite smoothly for several months. A few weeks ago, I prepared to switch hosting companies and started the conversion. During the process, I forgot to move QForge. This was due to my forgetfullness mostly, but also to the fact that I was sub-hosting the domain from my blog's account. Thus, it didn't show up in the lists of domains. Yeah, like I said, mainly my forgetfullness.
So, when I realized that I had forgotten, I went to go and revive the site. Well, turns out my database backups stopped running back in September. Yeah, don't ask.
Long story short, I contacted my hosting provider and they have a backup of the database. I have all the files. They are sending me the database this week. So, QForge should be back up soon.
Thanks for your patience.