I don't know when it changed, with a recent L5 update (I am on L5.0 SR-2 5.0.2.0743) or because Microsoft pushed some patch to Win7 or other software, but the monitor powered from an ArkView USB 2.0 Display Adapter
http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=5290725&SRCCODE=WEBLETBP017&cm_mmc=Email-_-WebletMain-_-WEBLETBP017-_-Deals
has stopped working right...but only for Logos. Essentially, the screen doesn't paint anything other than the title bar. If I put the window in a different window and drag it over, sometimes I can get most of the original window state to drag with it...but it doesn't update. I tried building the window as a sub-window, and noticed that when I right click on the MS background outside the smaller window (i.e., to get a pop-up menu) and then move my mouse around the Logos sub-window, lines paint back as I scroll over them.
Did one of the recent L5 updates grab an old .net / WPF library (i.e., one with a DisplayLink incompatibility)?