FYI: I opened a ticket and got a reply from logmein support:
<snip>
During remote control between client and host with different regional settings, you may need to adjust keyboard settings to allow for proper data input.
Connecting from a PC to a PC
Both sides must be the same
Connecting from a PC to a Mac
The Mac should be set to "international" and the PC to the desired input language
Connecting from a Mac to a Mac
The host can be set to any language, while the client should be set to the desired input language
Connecting from a Mac to a PC
You may experience mapping problems that cannot be resolved
I hope this helps. Please feel free to contact me if you have any further questions.
</snap>
well... probably this major problem cannot be solved.
Changing the keyboard on the device you want to control is NOT an option for remote support and makes this application unusable for me.
I use Vine server now (free and MUCH faster VNC server compared to the mac-integrated VNC solution when connecting from a windows pc to a mac).
This solves the mapping problem (you can configure it) but leaves all of you alone when you want an easy way to connect to your clients (you need direct ip-access or a port forwarding on a firewall / router).
I guess what you are really looking for is Teamviewer.
bye bye logmein :)