Thanks for your comment. I've tried what you've suggested, but I'm still getting same results:
* Statistics for CrawlDb: <crawldb_cluster_path>/crawl/crawldata/crawl/crawldb TOTAL urls: 1 retry 2: 1 min score: 1.0 avg score: 1.0 max score: 1.0 status 1 (db_unfetched): 1 CrawlDb statistics: done * I'm stuck, any other idea on how to face up to this, please?

