Unrelevant features are detected about javasurf HOT 5 OPEN

What version of the product are you using? On what operating system?

I'm using svn revision 4 under Windows XP, jre1.6.0_07 & jdk1.6.0_07

I am seeing these false artifacts as well. Any ideas why this would happen? 

The same problem occured under mac os 10.6 with jdk 1.6.
in the constructor of IntegralImage I found this:

            for (int i = 0; i < height - 1; i++) {
                float sumOfTheCurrentRow = 0;
                for (int j = 0; j < width - 1; j++) {

this is the problem, the last row and column stay filled with zeros, in 
different resolutions it is a very dominant feature and creates false interest 
points. Just delete the -1 or put a = behind the <.

Removing the -1 effectively gives more relevant features

Thanks