Block CrashPlan from backing up your files via bash. It can soak up your bandwidth at times.

stop_crashplan_backups.sh

# run the following command in terminal:
# sudo bash stop_crashplan_backups.sh
while true
do
    ID=$(ps aux | grep CrashPlan | grep -v grep | awk '{print $2}')
    if [ -n "$ID" ]
        then
            kill "$ID"
            echo "$ID killed"
            sleep 5s
    fi
done