Thought of a possible cause of your results with your desktop.
Don't really know the odds.
You might need to update your java, you told me that the calculator on thumpweb just opened full screen for you and that sort of pointed to not getting the javascript right.
Be careful if you update it, there's usually a few options set by default that you don't want so be sure to uncheck "Install the Ask Toolbar" and anything else that it might want to install.