Odd Problems
Jamroom Developers
I'm going to guess that is coincidental - I logged in via SSH and I see that the DB's are different. One thing to check is that you've not hardcoded any domains in templates.
We have a lot of users that are using threaded comments, and I'm not aware of any issues with it, so I'm not sure what to recommend without digging into it myself. If you're running any custom modules that also listen for db_create_item, you might try temporarily disabling them. One thing to know about events, is that each module can change the array of data that comes into the listener - i.e. a module that has a higher priority than another module could change the $_data coming in to another module that is lower in priority.
Also - check to see if the issue is only happening to comments on the Discussion module versus other modules (say a blog post) - if that is the case, then the Discussion module could be changing things via a listener.