I got this same warning yesterday morning - right away I let my hubby take over - it was a trojan - and just like shaverg said - it mimmicks your protector, to get you to 'upgrade' your protection - DON'T DO IT - hubby did a scan through our server - quarantined it - deleted it - reset the computer to the day before - and all is well. I was looking at the Quilter's World website through a link on this board when I noticed my computer acting weird - real sluggish - and then that red warning box popped up - not wanting to mess anything up, I let my hubby take over - he's good at keeping my computer up & running!