I did a thread like this on the Hero forum when I was a Hero owner/user. I have been meaning to do one here so here ya go. What is your opinion of Taskillers and feel free to comment after voting!!! I did download "Taskiller Free" and it seemed to screw up my phone. I uninstalled and the problems went away. I did this another time....same thing...same action. On a very few occasions, I have noticed that my phone was not sleeping properly. So I downloaded Taskiller again and killed all apps and then my phone slept properly. I have noticed my phone not sleeping properly a few different times so I keep Taskiller on my phone for this reason. It does remedy the situation. I am sure if I did a reboot I would likely get the same results but that takes a little longer.