printer problems

when i print out email or anything else it will take a long time to print and maybe 1 page will print then 1 page will be blank with with a very small smiley face then a good page will print then a blank with the face on. then maybe an hour or so later after i am done printing the printer all by its self will print out a page with the face on it i have an hp 1200 printer i have reinstaled the driver, i run spybot, adware se, and also microsofts beta spyware. i also have norton anti virus. i think there is something on the computer that is doing it but i dont know where to look the computer is on a network but the printer is not. no other computer or printer on our network is doing this.