I just downloaded a rar file and when I clicked on its properties a message came up , saying this file is blocked by windows because it came from another computer , press OK to unblock. This is the first time this has happend , could anyone please give me a inforamation as to why now ?

here the windows warns you that the file has come from another computer and it can be a security threat...if you trust the source, press ok to unblock it...scan it for viruses first... Windows XP user i would appreciate if everybody that has received help from me to say if my suggestions works

If THIS resemble what you see, you could have googled it before asking question. CLICK ME to watch interactive example (be patient it takes a while to complete its course). i_Xp/VistaUser