I have been running my R Pi successfully for a month and am very happy. But, I wanted to get rid of the very long ethernet cable snaking across the floor.
I installed an Edimax EW-7811Un wireless dongle and got it working as wlan0. I then unplugged the cat-5 cable.
Now when I reboot or shutdown the R Pi hangs for several minutes during the shutdown phase ( after the message indicating it was unable to find a hardware clock ). I assume this has to do with the ethernet cable not being attached because this did not happen when it was connected. But, I am unable to find any indictions as to the problem in any log files.
I commented out the 'iface eth0 inet dhcp' line in the /etc/network/interfaces file but this made no difference.
How can I prevent the long wait during shutdown?
Thanks.