[xdotx]

hey all, we use to have lan networking to share our net but my other bro jst got a laptop and so we got wirelessrouter. after that was installed my downloads were heapsssssssss slower.. duno if its coincidence or if its cos of the router.
q;1. sharing net through wireless router cause your internet dls to be slower?
2. is there a way to block outsiders from connecting to my wireless?

thanks in advance