[PROBLEM] blinking underscore instead of installation screen

[np4me2k]

Software
XBian version: 1.0 beta2
XBMC version: unknown
Overclock settings: none

Hardware
Power supply rating: 5V 1200mA
RPi model (model A/B 256mb/512mb): brand new bought in december 2013 / 512MB
SD card size and make/type: 16 GB Transcend SD HC Class 10
Network (wireless or LAN): LAN
Connected devices (TV, USB, network storage, etc.): TV, Apple USB Keyboard, Time Capsule

Logile
Link to logfile(s): NONE

Problem description:
I have got a brand new Raspberry Pi and instead of the XBIAN Loading Screen for the installation on the raspberry than a blinking underscore on the top left corner of the screen. I can't do any keyboard input, it just keeps blinking all the time. The status lights of the Raspberry Pi are all on and the LINK-LED is blinking. This is directly happening after preparing the SD-Card with the installer and doing the first boot on the pi. After rebooting another time by resetting the powerconnection just the red light on the pi is on and the screen is kept black and the blinking underscore is not there any more.


How to reproduce:
1) Formatting the SD Card with the official formatter provided by sdcard.org using the "overwrite" option
2) Using the XBIAN installer to setup the SD-card
3) Putting SD-Card into the Raspberry pi and booting up
4) The blinking underscore shows up directly and nothing else happens


Logs:
This is the filestructure of the SD-Card after "running" the card once:

drwxrwxrwx@ 1 michaelmeier staff 16384 27 Dez 09:07 .
drwxrwxrwt@ 6 root admin 204 27 Dez 09:48 ..
drwxrwxrwx@ 1 michaelmeier staff 2048 27 Dez 09:07 .Trashes
-rwxrwxrwx 1 michaelmeier staff 4096 27 Dez 09:07 ._.Trashes
drwxrwxrwx 1 michaelmeier staff 2048 27 Dez 09:48 .fseventsd
-rwxrwxrwx 1 michaelmeier staff 18693 11 Nov 2012 COPYING.linux
-rwxrwxrwx 1 michaelmeier staff 1447 11 Nov 2012 LICENCE.broadcom
-rwxrwxrwx 1 michaelmeier staff 582 11 Nov 2012 README.md
-rwxrwxrwx 1 michaelmeier staff 1104721 1 Nov 18:01 System.map
-rwxrwxrwx 1 michaelmeier staff 1104721 30 Sep 02:57 System.map-3.10.12+
-rwxrwxrwx 1 michaelmeier staff 17816 24 Aug 12:23 bootcode.bin
-rwxrwxrwx 1 michaelmeier staff 319 1 Nov 18:57 cmdline.default
-rwxrwxrwx 1 michaelmeier staff 322 12 Dez 10:28 cmdline.txt
-rwxrwxrwx 1 michaelmeier staff 157 12 Dez 10:27 config.txt
-rwxrwxrwx 1 michaelmeier staff 8782 1 Okt 13:40 fixup.dat
-rwxrwxrwx 1 michaelmeier staff 5573130 1 Nov 18:59 initramfs.gz
-rwxrwxrwx 1 michaelmeier staff 2845608 30 Sep 02:57 kernel.img
-rwxrwxrwx 1 michaelmeier staff 3477348 1 Okt 13:40 start.elf