i am also interested in this, i changed some options about my USB connection when i installed an application to make it work better (unfortunately that day i installed so many things that i have no idea how i did it or what i installed)
so when before i would plug the usb and it would go in mass storage straight away, now i have to select the option from the drawer...
i've been trying to connect to kies since yesterday and it doesn't recognize my phone, it tell me to reconnect in kies mode, any help please? also how do you update firmware via kies wifi? (which works)