I downloaded the Yahoo Mail App. It downloaded fine and I was able to open it from the notification screen where it showed it had been installed. But in looking through all the applications, it isn't there. I go back to Market and it says it is installed. I can open it from there. I deleted it and redownloaded it and have the same problem. The Yahoo App button doesn't show up anywhere. I had this happen with another App about 2 weeks ago. Any ideas?