About once or twice a day, my start menu goes white and the icon for my network changes from the normal 5 bars into this:
I'm disconnected from everything, and within a few minutes (whether I right-click and Troubleshoot Problems or just leave it alone), it goes back to normal. Pretty frustrating. I can't figure out what that icon's supposed to be, and you can't exactly google "computer monitor icon with kind of a padlock on the top corner"... well, I mean you can and actually I did, but it didn't help.
I'm running Windows 7 x64 and using a Linksys RangePlus WUSB100 adapter.