HR54-200 Problems

My receiver is having issues. It spontaneously reboots, it constantly loses internet connection, and resetting the network only works occasionally — it requires a full reboot to fix. It can also be painfully slow, and I'm fairly sure it's causing a network loop that brings my home network to its knees for 15 minutes at a time.

I have the Protection Plan Premier, so I'm hoping this has an easy solution: send me a new one, self-install.

Thoughts?