(Samsung Focus S) Anyone else experiencing the keyboard disappearing?

So I bought one Samsung focus S and it had a screen defect so i returned it for another. The screen is great on the second BUT it seems like the screen is more sensitive (in a negative way) on the second and the keyboard will drop occasionally while im in the middle of typing or sometimes my finger is near it but not touching the screen and the keyboard drops down and I have to tap the text field again to bring it back. 

Whats weird is, I didn't have this issue with the first Samsung focus, so im considering returning it for another. but maybe its a software thing and I just didn't have the first one long enough to notice.