Mt Gox account number changed??

[MrCrappy]

I notice my account number at Gox has changed to something I don't recognize. Could not find info w/ search. Anyone know anything about this?
I sent Gox a request but they are sorta slow.

Thanks very much.

EDIT: looking at it again, the account number is same but preceded by M64 and has an X at the end. Huh?

Not sure which number to use for Bitinstant deposit info. Perhaps BI can chime in?

Anybody help a brother out?

Sorry if this is a dumb question.