FB regularly do a cull of what they consider to be fake/fun profiles, which can include anyone who has a picture of a non-person (cat/cartoon, etc) and can include anyone who has fun profiles on their friends list. I fully admit to making a profile for my cat, and his profile has been deleted twice, along with 100s of his "friends".. and also real people who had added him.
you can mail the site at
[email protected] but they take some convincing to enable your old profile. I do know people who have managed it though, but it's not a quick process.
best of luck :o)