I've been using the rank tracker in seo powersuite to track a MNS of mine for a month or so and everything has been going fine until today. I checked it today and it said I don't rank in the top 100 results. I then changed the search range to 150 and it again came back with no ranking. I then changed it to 200 results and checked, then it said I ranked 50? I hit "check rankings" again and the result was 132. I hit "check rankings" again and it came back with 158. What is going on here? Do any other users of this program have this problem? Is it a proxy issue? I've been checking with this tool every day for many weeks, does this mean all my old data is bad too? Any insight you all may have would be much appreciated. Oh, BTW, I'm only checking US google results.