This morning I noticed that searching for a common term on my site yields only a handful of results. There should literally be hundreds if not thousands for this particular brand name, and it returned two. We have around 1.1M posts. I rebuilt the search cache without deleting the index. I searched again and received three pages of results, still far below what I should expect. About five minutes later, after looking for an answer, I searched for the same term again. This time it returned the original two results. I have not tried rebuilding the search with the delete index option selected. I believe the only search-related add-ons I have installed are Conversation Essentials, Showcase, and XenMedia Gallery. Where should I start?