Been searching for about a week with no answers/fix! I have the Galaxy S through C Spire and have been using both Gmail and Yahoo with no problems until about 2 weeks ago. I can no longer send/respond to email with Yahoo? I still recieve Yahoo emails all day but can not respond to them or send a new email? This is my work phone and I really need this to work again! I just did the software update and still have no luck? Please help me with this so life will be all good again!!!! Thank you for any and all help............