Seems like there is a strange bug in Switcher atm.
I have no idea why it is caused. Under suspicion are custom fonts in modded roms. The strange part is … it did worked once on a device with modded fonts. However this is investigated and i hope i can fix it as soon as possible.
It looks like that i am not the only one having this kind of bug: Stackoverflow question
Digia (Qt Devs) have made little exception in the basic symbian implementation and also have no idea why this error appears: Qt gitorious