In my router log I've seen entries like this: 11.11.10 16:10:56 WLAN station registered. Name: -, IP address: 10.67.101.1, MAC address: 00:27:76:CE:154, throughput: 54 MBit/s. 11.11.10 16:10:20 WLAN station registered. Name: HTCLegend, IP address: 192.168.178.24, MAC address: 00:27:76:CE:154, throughput: 54 MBit/s. That is my HTC Legend is connecting and then after a while "something" is connecting as well, same MAC address, but strange IP address. My Legend is still pretty clean but of course I've installed a dozen apps from the market. Am I paranoid, or is someone using my WiFi?