trilobyte/Premotion-AspNet-AppHarbor-Integration — pull request #9 by dazbradbury (2012-08-14 18:03:50+00:00)
Title: Module breaks use of Request.IsAjax()

As per issue: https://github.com/trilobyte/Premotion-AspNet-AppHarbor-Integration/issues/8

I would have thought it was an appharbor issue, but when I remove this module, the issue disappears. That makes me think this module is at fault - I've just done a quick re-write which seems to fix the issue.