When I saw this popup on the upper right corner of my macbook, I started to think what date did I install this program? or what does this program do? After a quick search I have found that Gmail Desktop alerts are using this 3rd party application. I have installed its 1.2.1 version which is around 6MB and hope that it will work better from now on. I wish Growl added something about Google or Gmail into the text of the update notification.