I have an Advent laptop running XP SP2, wireless connection to a BT Hub and loaded with BT Yahoo security. The computer seems to go to sleep for several seconds at times. I've removed some of the BT apps as I thought they were slowing things down. Whilst idly browsing I found under Systemm Info that I have 1024Mb of physical memory but only 153MB avaialble. Could there be a memory problem? Is there a good memory check software (preferably free) that I could use to check the memor?