@thilo: so a "dpkg -l linux-image-2.6.15-26-k7" shows you at least version: 2.6.15-26.44? would you please attach the output of "lspci -n" and "dmesg"? -- VIA IRQ quirk changes in 2.6.15-26.44 have broken various VIA devices https://launchpad.net/bugs/52649