Actually when I ran xfwm4 message was another window manger was running so did xfwm4 --replace. We coll now. Cheers
probally... you may want to uninstall nautilus ('nautilus-data) ect. Use synaptic and also note what else uninstalls and replace with others (xfburn for brasero, pdfreader ect.)
Glad got fixed
P.S. not sure what nautilus all doing in 'Mint-Xfce but I replace and finding no problems.