I'm using DF 7.3.4 on Win7 enterprise, and have my taskbar set to small icons, and very narrow, 32px wide for both the DF and Win7 taskbars.

As you can see from the attachment, the DF taskbar (right) doesn't quite match the Win7 one (left)

The start orb is chopped off at the edge instead of overhanging, the bevelled effect is missing along most of the top edge, the systray arrow is left-aligned instead of right-aligned and now I'm being really picky, but the taskbar icons start 1px further down.

Also the Win7 orb does a nice fade effect when you hover over it, where the DF orb does not.

I realise this is far from top priority and is really picky, but it is kinda irritating.