Anti-span stops working every day

Each day I reboot twice (2) and most time Anti-spam will work for the day, if I do not run Norton Utilities 16. Once I have either closed don my PC after work or run Norton Utilities 16 anti-spam will no longer identify spam. If I highlight multiple spams it says it is "Learning" but in a few minutes the same spam comes in it will not catch it (learned nothing@!)

Very frustrating. All Norton products upgraded with latest releases. Using windows XP, Outlook 2007, Norton Internet Ssecurities. Did not happen until latest version installed itself. Been going on for 30 days!