xorg problems

[Warren Block]

Since a port upgrade yesterday, there have been some occasional 
graphical garblings in text in terminal windows and title bars.  My 
saved example went away when X went away.  Rebuilding everything the 
xfce4 port depended on doesn't seem to have cured it, nor did rebuilding 
everything the xorg port depends on.

Starting X one time seems to work.  Quit X and restart it, and the 
machine reboots.

Any ideas?