I'm facing similar changes in my desktop too, though with skype & unetbootin. This is a brand new phoenix install and skype for some reason doesn't show any menu entries, just blank textboxes & dropdown. Only the buttons are visible but no menu labels. Similar thing happened with unetbootin, on launch it showed all possible text/option buttons but all blank and no menu entries. Also it rendered the machine unusable, screen started behaving weirdly, everything became distorted, finally uninstalled the app.
Any idea what the issue could be?