XBian hangs during boot showing "configuring network"

[ditschi]

Finally I had time to do some testing.

Power supply is ok!

Static IP: When I try to change IP to "static" with the xBian config in XBMC there is a popup "Network: An unexpected error occured" - then settings are restored to DHCP (same with ssh xbian config)
- How to change that in which config file?

Setting an 40 s delay in /etc/init/network-interface.override before ifup to delay DHCP didn't solve the problem - boot still hangs with overclocking enabled

I tried to compile the kernel but got stuck. I installed gcc-arm-linux-gnueabihf and cloned xbian-package-kernel (git clone https://github.com/xbianonpi/xbian-package-kernel) like suggested. Then I tried to follow "Building XBian" and "Compiling the Linux kernel & Raspberry Pi firmware" without success. How exactly do I do "just run building".