Hi & "THANK YOU" for the information,no problems as far as running AVAST,I just never saw the boot up scan befor on winxp, & thought it was a "hidden" option, as far as actual bootup scan 10 minutes?/(guess dialup or ?) it did my Compaq 7585,(650mhz,384 ram with DSL,) -yes I guess by computer standards its an old one had 5yrs and MY FIRST COMPUTER,and still seems to work good, but it did the bootupscan in about 30-45 seconds IF THAT LONG, thank U again & "Take Care ok,"jazzy"