I have NEVER seen this before anywhere but I just booted up my DAW and after logging on to Windows this box appears in the upper left corner of the screen. Its background is X2 black/grey (I mean like the background color of say the Track Pane in Sonar) and the text is Red. It simply says "Warning!", has an exclamation point in one of those rounded triangles (also red) and aside from that a little close button at the top left corner (the X and outline of the box surrounding it is white and the background matches the rest of the window). If I hover over it nothing appears indicating what it is. If I left or right click it it just disappears and nothing happens. The window does not show up as an icon in the taskbar like other windows or programs do. If I click the hidden icons thingy on the taskbar nothing is there either. I have rebooted multiple times and it appears every time. I did a quick scan with Microsoft Security Essentials and it found nothing. I rebooted and it wasn't there but I decided to reboot again just to see if it would come back and it did.
What in the heck is this thing? It is seriously bizarre and it's freaking me out. Cheers.