Ok. I just got this phone a few hours ago. Here's my problem: My friend has a Gmail account. When he found out my phone had a Gmail application, he wanted to try it out. He signed in, checked his mail, said "Sweet", then closed the application. After a while, I decided to try it out myself. I opened Gmail and immediately went to my friend's inbox. I didn't want that. I've spent a while now trying to figure this out. How in the world do you sign out of the Gmail application?