“0X00000044 Multiple IRP Complete Requests” error in “BT Net Protect Plus”

Firefox shows 'http://www.searchqu.com/' as my home page. There is a new task bar in my browser that I don’t need. Are these signs of a virus? Anti Spyware, "BT Net Protect Plus", scan shows no outcome.
The error “0X00000044 Multiple IRP Complete Requests” displays every time super Anti Spy is run. Anybody with an idea of what can I do?
