This user is me! I cannot see my own free/busy information in Outlook, however I can see the free/busy information of other users without issue. This issue has persisted across multiple re-loads, and with different versions of Outlook (currently 2013). We are running Exchange 2010 SP3.
Screenshot of issue:
Calendar Settings:
Short of deleting my account and recreating it I'm not sure what steps to take. It looks as though I should be able to see my own free busy information... No other users are reporting this issue, and in my spot checks no one else seems to have anything similar happening.