Thanks for the tips, gonna call the ISP and see if I can get a new modem from them. Apparently my onboard LAN connection died aswell, so I installed a PCI LAN card and that fixed that. Now my system started to shutdown randomly and start-up no problems. Logs say it's a kernel 41 (63) prob but sofar I found nothing that couls solve that issue The shutdowns don't appear to often but 3 times last night is allready to much for me