My Toshiba Laptop with Ubuntu 13.10 has Network Connections disabled on waking up from hibernate. Then, I have to once execute suspend and then, the connections are enabled.
Also, it takes quite a while to boot from hibernation (I have only 3GB RAM). Sometimes on wake up from hibernation, the laptop shuts down. Sometimes during wake up from hibernation, the laptop hangs and I have to forcefully press the Power Button to switch off power.