Yep and I lost coins because they mysteriously disappeared when I placed a trade. Unfortunately it didn't show up on the trade history either and the balance history is inadequate/missing so there was no way I could prove it. They do have support though, but it's still just a "beta" website IMO.
how can that be? , you always can get your transaction validate true
http://www.blockchain.info if it is confirmed you are save.
that's the beauty about bitcoin.
If it does not appear in blockchain.info is was never send its that simple.
did you send it from gox?