My xbmc couldnt connect to my nas anymore after waking it from suspend.
The error i got from xbmc would be something like "Error Fetching list" or "Couldn't load list"
The log would say:
unix_err:'6e' error : 'Connection timed out'
Seemed as there was a host lookup issue after wake,
so what you need to do is to add the host manually to /etc/hosts
SSH to the xbmc machine, or go to TTY1 if its possible (havent tried)
sudo nano /etc/hosts
Add a line with the nas (or other network device host) IP and hostname.