Yeah, just the nature of the script. If posts happen close to one another it gets all confused, and sometimes (depending on how many people are using it, which is usually "a lot") it gets bogged down. I'm actually having site issues related to ForumSpy because people open multiple instances of it, and though I don't want to, will probably make it contributor-only at some point soon. It really does kick the .... out of the server.
Regarding the 100k thread, no, but the upside is that it's almost over.