I'm the one who commented asking if it was tried on SO. There's definitely a lot of overlap here. Solr functions as a server, so there's administrator interest in setting it up and running, but integrating it with a specific application could be seen as more in the realm of application developers. Having read Josh's question, I could see it fitting on either site; it's not clear (to me) if the issue is a server misconfiguration or a problem with the application integration.
My suggestion that it be asked on SO was driven mostly by the idea that there are more eyes there, so an answer might be easier to come by there. On the other hand, there are more questions there, so it might get buried faster there as well.