It APPEARS ( ) that 90,000 of the bitcoin (~$49million USD) are sitting in these 2 wallets untouched:

https://blockchain.info/address/1cXNTyXj4xPGopfYZNY5xfSM1EPJJvBZV

https://blockchain.info/address/1P3S1grZYmcqYDuaEDVDYobJ5Fx85E9fE9

To me, their claims of assets simply don't add up:
https://bitcointalk.org/index.php?topic=494710.0

Without having access to their records, there is no 110% provability that those two wallets are in fact owned by GOX, however, if this were a civil matter, with the information provided at http://letstalkbitcoin.com/the-ghost-in-the-machine-at-mtgox/#.UxImAuNdUhM, there's pretty good probability that they are.

There's 3 other wallets which have an additional 110,000 bitcoin, so that makes 200k BTC:

40k https://blockchain.info/address/16Ls6azc76ixc9Ny7AB5ZPPq6oiEL9XwXy
30k https://blockchain.info/address/1MyGwFAJjVtB5rGJa32M6Yh46cGirUta1K

...

and
50k https://blockchain.info/address/1P3S1grZYmcqYDuaEDVDYobJ5Fx85E9fE9



Furthermore it seems that there's a motherload of wallets that have touched the following address (see for example where the transfers of .00777 end up) here:

https://blockchain.info/address/12Nxd2X12WZeYSjUcbtm5NpS3d81Yh8sKh

Such as:
https://blockchain.info/address/16Z1jD3ev9LnPkTr9LuqcLztq5ZMB8KENz
https://blockchain.info/address/15jdxjFhXUsp2xuycmKnjw8yk1WsVon69c
https://blockchain.info/address/19PPeuu4jPjqtefSQ2FDgKmNJ88Z5wiuJt
https://blockchain.info/address/18LpE3eaXgzUc7XGTNKCgZkD4EZN4NcAbK
https://blockchain.info/address/1MeCzxxB8eDd17DaocFLQaQtH8seVjNM67
https://blockchain.info/address/1Gg9GGQWmRk1pp4vNkMqLaEiPVNdiNvz7E