This is the second time im asking this question because someone had to close my question for a reason which i still dont understand.
this is the original question Why is my files,machine,help tab missing in ubuntu 11.10?
Most importantly, I cannot access the machine menu that should be there but isnt. I am using ubuntu 11.10 with Oracle Virtualbox 4.1.10

The reason why I am asking, is because I would like to run a USB key inside my virtual box,but since I cannot access machine, I can't access the devices manager either.
Just for your information,ive already installed the guest additions.