I've run into a couple of problems in Advanced Search, possibly caused by the same bug, as they're related to each other. The first problem is that the "Find Threads With ... Replies" field's values are not saved by the "Save Search Preferences" command. The second problem is that if I go back to the Advanced Search form and enter a different value for that field and submit a search request, I get back the cached results of the previous search, submitted with the original value for the "Find Threads With ... Replies" field.