Question : Why are Outlook 2007 drafts disappearing?

Why are Outlook 2007 drafts disappearing for one user using outlook 2007 sp2/

Answer : Why are Outlook 2007 drafts disappearing?

Have you tried resetting the users password? Just make sure that the account is not compromised?
Also click on the Drafts folder > Tools > recover deleted items for outlook 2007 and check if you can see any deleted items