I typically delete Nav entries about once a month or so. (It REALLY speeds up searches.) But after I delete all entries I notice that I still have 8-10 entries that simply will not delete. They are there the next time I look at the list. The number of these non-deletables is continuing to grow. Any ideas on how to get rid of them. Many of the entries date back more than a year but some are as recent as a month ago.