Well, a couple of possibilities come to mind:

• You entered your e-mail address incorrectly. Due to a recent thread, it crossed my mind that you might have entered your e-mail as "bob@aol" or just "bob" instead of "bob@aol.com" (please don't hate me for having that thought cross my mind).
• Your e-mail provider or reader is blocking or throwing away the e-mail because it incorrectly thinks it is spam.

Perhaps vroom could look into this for you. You might want to put the relavent information into a node in the Report a bug section.