I have read in this forum that some people have the Task killer or Advanced Task killer and some have questioned anti-virus. Here is my question part 1 of 2, Do I need a task killer? I noticed the available memory increase when I close selected apps. My phone dragged one time due to a defective app that I since removed. Part 2 of 2, Do I need an anti-virus? I follow the rules to not get a virus, but this is a small computer. I suppose that any website or e-mail attachment is at risk. I know not to open attachments from unknown senders. But really do I need it? I just downloaded Mobile security, that has anti-virus, online backup, and phone locator. It's really cool and gives the option to turn off features you don't want. It's free too! I hope that CaddyMan and OfTheDamned will respond. I just want to know if I wasted that space or if this is a good idea.