Since a few weeks I have seen that the keyword tracker is no longer accurate. So I manually tested my sites and was suprised that it looks at the google.com positions instead of the google.nl My site is suddenly alot lower in the rankings becuase there are more site in google.com than in google.nl Al my setting are on the local (The Netherlands / Dutch)
There has been some weirdness with the Google API regarding non-English keywords, but I have not heard of anything like what you describe. I'll check into it a bit.
Thank you. It is real strange, when it comes to google.com, the keyword ranking list is 99% correct. When it comes to google.nl it is more like 35% correct.