It may have nothing to do with wheather you like your job or not. I've suffered from insomnia a few times and in my case, it was when I was unhappy about a specific aspect of my life.
I think that going to sleep may equal in our subconsciece to confronting ourselves. I hated sleeping - I still hate sleeping, I consider it a waiste of time, but I need it if I want to perform in whatever it is that I'm doing.
Find the thing that bothers you. You do seem a bit apathic, so why don't you take a good hard look at yourself and confront whatever it is that you're avoiding.
As for me and the company I currently work for, we're doing fine, it's a bit of a stressful time for me, as I have to prepare a huge meeting - in Germany - and my boss is on vacation. People at work are really nice, the other interns are much nicer, however
. We hang out together, throw parties, we're a really fun crowd. I get along just fine with two girls, we went to see "Don Quijote" - the San Francisco ballet company: WOOOW!!! So I guess I couldn't be happier with the company I work for either.