Alright, I just wanted to check for myself (without losing more money by flying to Japan).

MtGox is reportedly domiciled at this office space:
http[Suspicious link removed]cutivecentre.com/location/shibuya_cerulean_tower
So I gave them a call +81 (3) 5456 5513 at the general reception. The nice lady was unfortunately unable to connect me to anyone at gox (not surprised), told me that she couldnt give me a number for privacy reasons, told me I should contact them by email at info@mtgox.com but she confirmed that they are renting office space at that location.

I found it at least somewhat interesting that they would take the troubles to rent a new space instead of getting on the first flight out of the country with their cold wallet as carry-on luggage.

Cheers,
Holle