I doubt this is news to you. But it is news to me.

For years I've been pronouncing it jì, most likely influenced by 计. And then it appears on my ZDT flashcard list. I type in the pinyin, and get it wrong. Sure that the word list is wrong, I look further. Wow, MDBG has it wrong too :-) After searching two additional sites, I finally had to admit that I've had it wrong all these years.

And I've been wondering why I have such a hard time ordering fruit juice in China

As an aside, over on this thread http://www.chinese-forums.com/index.php?/topic/27660-learning-vocabulary-software/ there was a bit of a discussion about the benefit of having your flashcard program require you to type in pinyin, as opposed to just clicking on whether you know it. This is one of those reasons. If I hadn't needed to type it in, I probably would have have just clicked on "I know this well" without checking too closely and moved on.....