This tutorial will explain instructions to disable bluetooth and Wifi in Ubuntu 11.10 during start up .
Step 1: Go to terminal and type following commands to edit /etc/rc.local file.
gksudo gedit /etc/rc.local
Step 2: Add following line before exit 0 line :
rfkill block bluetooth
Similarly for Wifi ,Add following line
rfkill block wifi
doesnt seem to work for me