The problem: I tried to delete a file or a folder and Windows7 says that it is being used by a program so I cannot delete it.
And the truth is that it WAS being used by a program but it is not any more !!
Of course if i just reboot the system I'll be able to delete it or maybe after some time...
I have observed this happens specially when you are using PowerPoint files.
It is amazing this problem - frequent in XP- have not been solved.
Why are they adding a new bunch of non-essential features while these basic things have not been really deeply solved ?!?