The solution in this thread was a simple "apt-get -f install".
Some other user said, that he had to install libva1 manually before installing xbmc.
The thing is, that xbmc depends on libva but there is none in the ubuntu or yavdr-xbmc repository.
Installing it manually from the yavdr-vdr-stable repository or just adding this repo to your sources.list might help.
Server: XEN 3.4.1; AMD 4850e, 4G DDR2, Dual Intel PRO/1000 PT, DVBSky S952 Dual DVB-S2 + TT-C1501 DVB-C, 2x 2TB + 500GB
dom0 - lenny xenlinux 2.6.32.13; vdr-domu - ubuntu 10.04 xenlinux 2.6.34.7, yavdr-ppa
Client-1: MSI 785GM-E65, X2 215, 2GB DDR3, 500GB WD, Zotac GT 640 LP, IR atric rev5, Ubuntu 12.04, yavdr-ppa/VDR-1.7.40
Client-2: Sapphire Edge-HD, Atom D510, 2GB DDR2, 250GB, ION2 512MB, Ubuntu 12.04, yavdr-ppa
This post has been edited 1 times, last edit by "tecfreak" (Feb 27th 2011, 2:12pm)