I just make a few searches on Overture Keyword Selector Tool and the results are displaying: Searches done in January 2007 I used that tool in the past but the results usually were 1 or 2 months old, but now are 4 months old. For some niches that's no problem, but I was looking keywords for celebrity news niche.
Unfortunately that is what you get for free... quite frankly we were lucky that overture was giving us such updated data.
you can use the DP keyword suggestion tool http://www.digitalpoint.com/tools/suggestion/ ,, try to compare if it is different...