Hi,
I don't know if this works:

I downloaded a software called prontoini.exe which enables you to have other font sizes (i.e 8)with PE.
Problem is you sometimes get the problem described above with the "not original" font sizes.
In the "readme" of this software it says:

...3) Automatic routine to enable all available
Pronto font sizes (note that icons are not
available for new sizes except for the
ProntoPro).

So if you are using prontoini.exe (can you use for example font size 8?) just change the size of the font to 10 and see if it works.

let me know if it worked!
buxe