What is System Maintenance GL? Do I need it? How did I get it? What does it do? I just started noticing an icon that appears at start-up, if I click it (before it disappears) it says 'System Maintenance GL is up and running' also, sometimes a pop-up appears with stern warning 'System Maintenance GL -- update required -- update now (with button to click to start update). Is this a virus? Possible malware? Do I need to get rid of it?