One of the machines I use PortableApps on has a very high resolution display. The display is set to be 126 DPI, which makes the fonts bigger and more readable.
When I run the PortableApps Menu on that machine, the text is large and readable, but the graphics are the same size as always. As a result, graphics only occupy the top left corner of the menu. The 'X' button to close the menu program appears to be somewhere in the centre of the menu, but clicking it does nothing. To close the menu I have to click somewhere near the bottom right corner, where the graphic for the 'X' button should be.
I'll upload a screen shot to a website just as soon as I get onto a machine where scp works...