If use Mint13-Xfce Iso on Xfce 4.10 core, if use any panel plugins or other Xfce add-ons from repos (software-manager, synaptic or apt) they may still be 4.8 and not compatible on 4.10.
P.S. Mint 14 should be in sync (cause (X)ubuntu 12.10 is)
don't forget to switch on compiz if you want to adjust transparency and have shadows etc.
Think mean compositor in setting>window manager teaks
. Compiz is a full blown WM (easy in Xfce thou)