Hey Paddy,
Sorry to hear about your hungry and dropping out of ketosis, i know it can be very hard when your hungry and have taken all the shakes for the day, i sometimes drink coffee between my shakes and water i think that can lessen the hungry pains when i feel like having a meal in the middle of the day, i have no idea why you would have fallen out of ketosis, sometimes it can be not enough water as mousey said or using the wrong type of sweetner or i have had to take a lemon wedge out of my water in bars because i was scared of the citric acid....But good luck, keep up the hard work, you will get back into ketosis soon, that will make this whole diet more bearable at least.
I start eating tomorrow got a shake and then a dinner of chicken and salad to look forward too, to be honest, i have probably ruined it for myself as this last week i have cheated 3 times, i guess it's like christmas day i couldn't wait to open my presents i just hope i haven't wrecked the whole, slow carb refeed, but i will carry on tomorrow, hopefully with all my cheating there won't be a gain on my saturday weighin. Well off to my last day in work with nothing to do on my lunch but window shop, not eating really gives you more free time LOL.
Good luck to everyone,
Shane!