My curiosity is up, too. I'll keep looking. Please ping me if you find a reason, and I will do the same.
Judge: Joran Van der Sloot Can Be Questioned By FBI
http://www.riehlworldview.com/carnivorous_conservative/2005/07/judge_joran_van.html
Was just informed that court results are now out in Aruba. All of the DNA evidence is said to have been thrown out - however, the tests can be conducted again through the proper procedures. Defense attorneys had challenged the testing as they claimed to have not been given enough time to argue against the procedure.
In possibly the most important development, a judge has ruled that suspect Joran Van der Sloot can be interrogated by both Dutch and FBI officials.