I have my router set to PPPOE because I use different types of connections from different ISP's. When I enter the PPPOE settings on my Xbox it works fine but when I want to access pictures, music or videos over the network connection the console can't find the PC. When I remove the PPOE settings and restart the console I can then access everything fine over the network but of course I have to put the settings back when I want to use Live.
Now I’m not sure if I'm the only one with this problem and I can't remember having it before I updated my console with the February update.
Any advice on how I can get around this or at least undrstand why it does this?

Any advice on how I can get around this or at least undrstand why it does this?