I'm using Ubuntu 9.10 on a Acer Aspire 7535-5020 Laptop with a Atheros AR5B91 Wireless Network Adapter. This is a dual boot with Windows 7 & I have no problems staying connected with Win 7 but every time I boot into Ubuntu I loose the wireless connection after 10 minutes or so. The time varies on how long it stays connected but once it disconnects the only way to reconnect is to reboot & then it auto connects & goes thru the cycle again. If I connect via Ethernet I have no problem but this is a laptop so it would be nice to be able to use the wireless connection without having to keep on rebooting all the time. Needless to say I don't use Ubuntu very often for that reason. I've read on other forums, even the official Ubuntu forum of others having the same problem but I have not found a solution. Anyone have any ideas on what is causing this to happen?