sudo modprobe cdcacm
FATAL: Error inserting cdcacm (/lib/modules/2.6.35.13-my-costum-kernel/updates/dkms/cdcacm.ko): Device or resource busy
[ 1803.802672] sysctl net.netfilter.nf_conntrack_acct=1 to enable it.

zainab@zainab-ThinkPad-X61s:/usr/src/cdcacm-0.1$ sudo rmmod cdcacm
ERROR: Module cdcacm does not exist in /proc/modules