Tweaked the usage of \textbullet to avoid the fall-back to Computer Modern fonts and prepared the usage of symbols from the MarVoSym font for fontspec (LauLaTeX or XeLaTeX)

moderncvstylecasual.sty

@@ -30,7 +30,7 @@
 % commands
 %   footer symbol used to separate footer elements
 \newcommand*{\footersymbol}{%
-    {~~~\textbullet~~~}}% \textbullet forces the use of the CMSY font, even when latin modern fonts are used :(
+    {~~~{\rmfamily\textbullet}~~~}}% the \rmfamily is required to force Latin Modern fonts when using sans serif, as OMS/lmss/m/n is not defined and gets substituted by OMS/cmsy/m/n
 %   internal command to add an element to the footer
 %   it collects the elements in a temporary box, and checks when to flush the box
 \newsavebox{\footerbox}%