summary reports Defense+ has limited functionality == virtual restrictions apply

on another similar computer, with similar setup (same antivirus, same anti-malware) I get a nice green box and everything is functional – I’m not operating under a virtual system at all – the ONLY thing I can think of is that this is a dual-boot WinXP/Linux box with GRUB menu? Is THAT what’s causing this issue? (the other similar machine is NOT dual-boot)