Real Time Protection not working

Yesterday, I noticed a red "X" on the Norton icon.  When I clicked on it, a message appeared stating "Your computer is at risk."  I hit the "Fix It" button & it scanned thru Autopotect, Antispyware, Sonar & email protection but could not fix them.  Under the settings the above are turned off.  They can be turned back on but immediately revert to off.  I used the eraser thing & it found a problem of some sort but did not help with the above.  My product is up-to-date & subscription active.  Please help!