Xubuntu : A heck of a lot of problem ..

Yesterday , I had a pleasant night after completing my website template on Xubuntu . You would be wondering , why i am talking about mine yesterday night .
Its because after a successful session of work there was a problem which wasted mine last 4hours ...
I have faced a lot of problems on Xubuntu but not like this one . When i waked up in the morning started mine pc , logged into Xubuntu opened the terminal ..
Guess What was next ... How do i close it ... NO minimize No cross ( close option)
was there .
But i was able to access net , so as ubuntu forums ... posted my query but response i got , was too late , it was mine 4th post which solved my problem that too not fully .

Look the pic there is no close option on top , not either there is maximize or the minimize.
The same condition was of mozilla firefox too..

How did I solved this problem :

1--> go to the terminal or press alt+F2
2--> sudo apt-get install metacity
3--> type metacity --replace , but don't close the terminal now, otherwise they will vanish again.
4-->Now Log Out of the system, but make sure the save session check box is ticked.
5-->Now Log In and close the terminal. You should now able to see all the missing options now .
Though i love to solve situation like this .. But in crysis of time , I HATE THEM .