There's a lot going on at once here, so I'll describe it as simply as I can.
First: I have an external hard drive attached to an old HP laptop running Ubuntu 12.04. The HD automatically mounts by default. This hard drive is full of mp3, ogg, and ther audio files, mostly in a single folder (which, in hindsight, isn't the smartest idea).
Then, I have a newish ASUS laptop, also running 12.04. The HP and ASUS are set up respectively as NFS server and client. On the HP's etc/exports file, I have a line that shares the drive with the ASUS.
On the ASUS, if I go to the terminal, manually mount the shared drive to the ASUS mount point (on the desktop), and chmod -R 777 the drive (referring to it as the mount point, a folder on the desktop), I can navigate into the drive from my ASUS, double-click on an audio file, and hear it from across the LAN.
Problem is, every time I do this, the internet quits working, and I have to unplug/plug the cable modem to get it working again (which it also does every time, thank goodness).
Why does that happen? What am I doing wrong? Might I be unintentionally blowing some sort of virtual fuse in the cable modem by sharing that much data at once?
Edit: I'm a TimeWarner Cable customer. I hope that's not the underlying problem...