Gmail app does not refresh email read status The first thing I like to do in the morning as I wake up is to read new emails in the Galaxy S. I refresh my Gmail account in the Gmail app, the mails show up, I read them and everything works smoothly. 

However, when I get to work and open my Gmail account on the desktop, all the emails I had previously read show up as "unread". Why does this happen? I have Google account syncronization off, is this the reason? Doesn't this only affect the incoming email?
It's because you have synchronization off. How else is your device supposed to tell the Gmail servers that you've read a message?