Other space in iphone, taking up over 2 gigs

This morning, I've been trying to transfer my iphone to my laptop's library, but now all of a sudden the "other" portion is taking up over 2 gigs. I'm really trying to avoid restoring it. I've tried a ton: deleting messages, deleting apps to get rid of their documents and data, clearing my safari cache, but to no avail.

I also just recently downloaded itunes 11.1.1, and I think that the new update may have something to do with it… Anyone else have this problem? If you did, how did you solve it, because this is beginning to frustrate me a lot!

That 2gb is also part of the Operating System that is on your iphone, unfortunately you can't delete it.