I seem to have a problem with my Belkin Wireless USB Adapter staying connected in 8.0.4. Ubuntu automatically detects it and it runs decently until I start to download some things and I get a random disconnect to where I have to completely reboot in order to get back online again because re plugging it in does not help. I have noticed that it turns off also. Not sure if this is because I'm using a 64 bit version of Ubuntu or not. This adapter did run fine in Windows XP 32 bit before I made the complete switch.