Unfortunately account transaction history only saves up to a certain amount of time. Anything way far back or outdated just doesn't appear.
I would assume that you may have been apart of the rollback but since you still have several of your items that assumption goes to dust.
It is possible someone got onto your account... I'm just curious, were all those sets full or were they always empty sets.?
Anyways, since there is not much I can do personally I'll see about getting a higher up to look into this. (They may or may not be able to do something about your lost items)
EDIT: Also, just to clarify... You said today was your first day back? Login history shows some activity on the account a few months ago and some of last year.
Last edited by marcus; Mar 18, 2012 at 07:55 AM.