XBMC 12 Frodo - Beta 3 - XBMCbuntu installation to hard disk / fonts too large

I want to install XBMC Frodo B3 on my PC. It boots just fine from the live cd (burned from xbmcbuntu-12.00-beta3.Intel-NVIDIA.iso) and after some booting time, the selection screen where I can select to "run XBMCbuntu" or "install on local drive" appears. When I choose the install option, the fonts and window sizes in the following screens are so large that they are out of screen and I can neither read nor click them.

Thanks in advance for any ideas how to solve this.