Q: Quit Safari is not highlighted

man oh man this has been an on going issue with a lot of people.  In fact it now happend to my Mail too.  It seems to be a Lion issue, just try to force quite it.

command,option-ESC

do what i do...contact apple by using this feedback link.  Let them know what the problem is, just feel beter knowing that you are not the only one with this problem

http://www.apple.com/feedback/safari.html

Select  ▹ Force Quit... from the menu bar, then select Safari and press return.