Sounds plausable, but I don’t think that is your real problem. My laptop has the same check, and I have NO share issues.
You likely are losing your network’s master browser like many do. I lived with these problems, too, my settings were all correct, but I still could lose shares. It was not until I had a permanent master browser (created by my router settings) that my router became the MB, 24/7. Share issues are gone! Your PC would be the MB otherwise. If it lost MB status and the WDTV took over, that is when problems with shares appear. Read and download the free program here and keep tabs on your MB with this program. http://scottiestech.info/2009/02/14/how-to-determine-the-master-browser-in-a-windows-workgroup/
When you reboot the PC, you are “starting over” with the master browser, and you need to turn off the WDTV if it was the MB before the PC reboot so the PC can be the MB once again. (Or, get a router that can be the MB.).
