If you are using a router for your home network connection to your ISP, you might look at an occasional reboot of the router. Most of the small 4 and 8 port 100Mb routers suffer from memory leaks, ESPECIALLY those that sport integrated firewalls and DHCP.
I end up with poor ping, incomplete name caching, and all sort of crap.
I end up with poor ping, incomplete name caching, and all sort of crap.