Hi esa,
The solution for your issue is here:
http://windowslivehelp.com/solutions/servicemgt/archive/2008/12/26/what-to-do-if-you-can-t-sign-into-windows-live-hotmail.aspx
Additionally, 4 hours is only a tentative timeframe for the Product Team to resolve an issue. It could go on for more than that, so please wait a while for them to finish their job.
Thanks