Haphazard icon placement with no consistent visual style, either rework their arrangement (and find a more consistent icon set) or change workflow to use a launcher application (built in windows WinKey search or launchy are good options).
Music player/clock are fine, but end up looking awkward due to the lack of negative space balance on the page.
Desktop system monitors are cliche as hell. Why is the system monitor flush to the edges of the desktop but the space indicator isn't? Better yet, why do either of them exist?
Unnecessarily large number of icons visible in system tray. No consistent visual style between icons.
Two onscreen clocks for some reason.
Windows visual theme is stock and uninteresting. Looks acceptable.
Background is excellent.