Advanced Task Killer has been greatly frowned upon by many DX users, while I was with them at first, I quickly changed sides on the whole argument about bad and good, to the 'good' side. My battery was noticbly starting to run out with in 4-6 hours the last few days or so under very minimal usage. But after awhile of hearing how bad ATK is I just wanted to actually make it official and stand behind my reasoning for it being bad for the DX with a supposedly built in task killer. I DL'd it yesterday morning while the phone was still plugged in to get a full charge for the day. And set it up how it was on my Droid, and I will just say this... My phone from yesterday mornings charge is just now hitting 20% after heavy usage every other hour for anywhere from 30mins to an hour of constant usage one he internet and playing games. I did this as a test for a kinda decent review. And I will just say this, I am now with the people who like ATK on their DX, it has greatly changed my batteries life duration. Just wanted to share my opinion with everyone about the ATK debate, and my findings.