Lame_Wolf - 2:16 pm on May 13, 2010 (gmt 0)
This is why I have been requesting for some time now that Google make available to publishers the IP address login history for all Adsense accounts.
IIRC any changes to the info of an account are then emailed to the original email address. Therefore any illegal changes would/should have been spotted by the OP.
Anyway, aren't any changes have to be made by the 15th ?
WiFi problem... possible. The details could have been sent to someone in India.
I would also check your spam tray for any real Adsense emails.