As I said up there my mac acts strange. When I connect to any wifi network(network name or type is irrelevant), a webpage opening in my default browser(I tried and changed default browser but no luck. Same thing keeps happening.) which is called "http://vodafonemobile.wifi". This started when I installed Vodafone 3G Wifi Modem Software to my computer. Uninstalled it but no luck neither.
Anyone knows how can I stop this thing? It is really annoying.