Issues I have with Snow Leopard - Sound and Wi-Fi Connection

I loaded Snow Leopard just recently and there are two issues/bugs that I have run across:

1) Every time I restart my computer, the Line Out for sound to my speakers is switched to "Mute".

2) More troubling is that when I restart my system, I can no longer get connected to the internet without re-starting my Cisco. I see that I have a full strength wi-fi signal, but it's not get the information from the Cisco until I re-start that box too. No other computer on this network has this problem and those computers are still on Leopard.

Are their fixes I should be considering? Thanks!