It must have been shocking! But I have a question 
to ask. Since your friend had helped you get 
established and all. And it seems that he/she had 
shared access to your site. Why is it that he/she 
would do such a thing? I mean did you lose any 
images or was it just a prank to get your 
attention? I mean for someone to spend that 
amount of time helping you out,get it set up, and 
then mess things up, you must have really 
pissed'em off. Don't get me wrong I would be 
disappointed too, but please explain why you 
think the person or "vandal" was angry at you? It 
seems that you sure did fix the problem fast by 
the way! And if he or she had shared access to 
your site then I think that you are "lucky"--what 
I mean is lucky that you could fix it, if you 
know what I mean. That person could have totally 
erased it! So, I don't think it was sooooo bad-- 
(feelings aside and all) Did you try to work it 
out with your friend? I hope you good luck anyway!