There was a thread about this in the bugs forum last month. It looked like food duration was going to be fixed, but it never showed up in the patch notes. I've also noticed that where food and drink used to be consumed at the same rate, now I need to carry about 1.5 stacks of food per stack of drink. Something's definitely still out of whack.
http://www.project1999.org/forums/showthread.php?t=5242