question about an icon on my empeg display

Hmm.. about the same time I hooked up my empeg via ethernet (first time, was using usb before) I notice a rectangular icon in the upper right hand corner of my empeg's display. I looked through the faq, my manual and the bbs and couldn't find a reference to it. Attached is a picture of it..

Hard drive activity indicator

/Michael

Smaller icon with solid gray in center: (Unknown at this time.)