tracker_scraper.go | 10 +++++++---

diff --git a/tracker_scraper.go b/tracker_scraper.go
index 71493b2f6ee94e89b93a146a1405de2f621eaa88..c675e11510c6475ad71c8d6cfd05a00aed9ed2b8 100644
--- a/tracker_scraper.go
+++ b/tracker_scraper.go
@@ -30,12 +30,16 @@ 	}
 	return
 }
 
-// Return how long to wait before trying again.
+// Return how long to wait before trying again. For most errors, we return 5
+// minutes, a relatively quick turn around for DNS changes.
 func (me *trackerScraper) announce() time.Duration {
 	blocked, urlToUse, host, err := me.t.cl.prepareTrackerAnnounceUnlocked(me.url)
+	if err != nil {
+		log.Printf("error preparing announce to %q: %s", me.url, err)
+		return 5 * time.Minute
+	}
 	if blocked {
-		// Wait for DNS to potentially change. Very few people do it faster
-		// than 5 minutes.
+		log.Printf("announce to tracker %q blocked by IP", me.url)
 		return 5 * time.Minute
 	}
 	me.t.cl.mu.Lock()