Do you mind people lending your things?

no no no i hate lending and i get mad when people lose/damage things i give to them

Nope I don't mind, but I get annoyed when they take way too long to return it though. I once let a girl borrow some DVDs and I didn't get them back until 3 years later sigh.

Depends what it is. Nothing annoys me more than if I lend something to someone and it comes back in very poor condition.

Well I don't think this situation has ever happened to me, or not that I can recall of at the moment. But I probably wouldn't like it. I like to have the impression that I have control over my possessions.
I may have allowed people to borrow possessions that I am borrowing myself by accident, but usually it's small things such as stationary.