Net Income Summary vs. Income/Expense Report
In the Program Defaults, you can select the option to view a "Net Income Summary" on your Summary tab. This totals listed here will include all transactions, including transactions posted to the "other" category.
Keep in mind that the Income & Expense reports reflect only transactions classed to either an Income or Expense category. In the event you post a transaction to the "other" category, your "Net Income Summary" number will differ from your "Income & Expense" report totals.