a question about something called about home

hi guys i used the disk cleaner in system tools to free up more space on my laptop for my animes till i can put them on dvd

anyway on the summry thing where it shows how much space you can free up if you free up temporary files offline files ect

there was a offline file it was called abouthome and i dont remember ever making a site available offline

so i checked the offline files box and temp files and freed up the space and boom speed

could abouthome be a malware or spyware site