I'm having a strange problem with my HTC Hero. I am connected to Wi-fi both at home and at the office. Ever since I changed my "Wi-fi sleep mode" to NEVER (so that it remains on Wi-fi, even when I'm not using it), I've noticed that at HOME only, the phone seems to lose connectivity. What is strange though, is that I am still "connected" to the router. The Wi-fi icon remains, and I can see the signal strength fluctuating as I move about the house. I simply cannot get any activity, and I cannot ping the handset. If I disable and then re-enable Wireless, I'm back online, but only for about 5 minutes or so. Trawling through the forums here, the only result I found where a user had a similar experience was one where he managed to get around it by changing the channel #. This did not work for me (See here: Issue 1698 - android - Wi-fi loses connection with router frequency and doesn't reestablish automatically - Project Hosting on Google Code). I am using WPA PSK encryption. My next test will be to remove encryption altogether, but I figured I'd pick some brains here first. This is frustrating for me because as I do not have an unlimited data plan, and I'd really prefer to make use of the existing Wi-fi connectivity. And since the phone seems to think it is still "connected" to the network, it doesn't switch over to the mobile network and my online services stop working (eg. latitude, Gtalk etc.). My router is a Netgear WGU624. Any advice / suggestions appreciated.