| | Re: Rebooting problem 8520
That is definitely sufficient file free.
What do you mean, "it" removed apps world? Did you remove it, or did it somehow disappear? If it just disappeared, it's possible you accidently hid the icon, moved it to a folder, or both. Look in options > advanced options > applications, or options > applications and see if it is still installed.
Is it still doing ok since you posted? If so, I don't have an answer as to why. See what happens over the next 24 hours.