Creating a TouchItem in Vaadin displays too small on iphone4

I am using Touchkit 1.0 for Vaadin but when I add TouchItems they display too small on both iphone 3 and 4. I have used the 开发者_如何学Gotheme "touch", although whichever theme I put in "setTheme" seems to be ignored anyway.

Are you sure that you are using MobileApplicationServlet instead of ApplicationServlet?