I've heard of others having this problem with Skype before, so after reading your story, I investigated how to find this information. The process in this link definitely results in a date that is in the right general ballpark. I haven't had cause to authenticate my ID with this date however.
Because this method exists, verifying by incept date is kind of stupid on MS's part. A hacker would also, if he's got control over your account and has you logged in on his device, be able to perform this procedures.
http://community.skype.com/t5/Windows-archive/Account-questi...
Because this method exists, verifying by incept date is kind of stupid on MS's part. A hacker would also, if he's got control over your account and has you logged in on his device, be able to perform this procedures.