126.96.36.199 and 188.8.131.52, these are google's DNS servers. I checked the host file and there are no entries containing linux.org.
I had this same problem using my ISPs DNS servers, however, instead of linux.org, the errors were to:
dns.msftncsi.com Hydrometeorological Prediction Center (HPC) Home Page
and a few others. With the google DNS, only linux.org errors remain. I am just at a loss to figure out what on my system could be accessing linux.org.