Fixed my few-day-long issue by deleting all Fonts in ~/Library/Fonts! Weird but it worked...
I have a similar issue. Did this fix hold? System library or user library? What do I do after removing them. I'll need some fonts, won't I?
My issues= Text on home made buttons on does not appear, sometimes text will not appear in drop down menus too. My sysytem is used over several machines and most have no problem but one machine often has troubles with the visuals but some times it works fine???.