/sys not mountet

Hi, I have updated my box today and after rebuild nvidia I rebooted. After rebbot I got an issue: umount: /sys : device is busy mount: none already mounted or /sys busy The update included "util-linux-ng", is there a known problem ? my mtab /dev/sda6 / ext4 rw,noatime 0 0 /dev/sda1 /boot ext2 rw 0 0 /dev/sda7 /home ext4 rw,noatime 0 0 /dev/sda3 /save ext4 rw,noatime 0 0 devpts /dev/pts devpts rw 0 0 none /proc proc rw 0 0 usb /proc/bus/usb usbfs rw 0 0 /tmp /tmp tmpfs rw,noatime,mode=1777 0 0 Yes, /sys is not mounted and I'm pretty clueless. Would appreciate any help. ___________________________________________________________ Telefonate ohne weitere Kosten vom PC zum PC: http://messenger.yahoo.de