This USB device could be unplugged then and if you still are doing a hard shutdown then your machine and install has ISSUES beyond this device. It's time to get your machine's maker to fix this.
ok so heres my issue. I have the wusb54gc (linksys) wireless adapter i have windows 7 and i have it installed and it works, but not all the time. I can get connected and stay connected for a few hours til it just drops the internet connection and then kinda locks up where i cant disconnect from the router or even shut down my computer properly (i have to hold power button) ... this has worked in my vista x64 install and i did do the compatibility/administration for the installation. this is getting really annoying so any help will be great.