I am new to the whole iMac thing and have a few questions, thanks in advance 1. Is there a way or do I need to kill nay apps running in the background, like I do on my iPhone 4? 2. Will java or whatever automatically update? Ya know like when apple released the flashback removal tool, how will I know they released it? 3. How do I add widgets like the weather widget to my desktop? 4. What exactly is ichat? Is it like IM between iMac users only?