First of all let me get that * out of the way. While it is possible to set up ssh logins with no password at all using this method, I recommend using a password when creating your key pair. This will give one master password shared between all logins that only needs to be entered once per session.

First of all you need to create a public/private key pair. I’ll assume you haven’t already done this.

user@machine:~$ ssh-keygen -t dsa -f ~/.ssh/id_dsa

It will prompt for a password. You should use one here, and use this key pair for several hosts. This would give the same password across all of the hosts. Or, you can just leave it blank. If you do that, then if anyone gets your private key file, they can access all of the servers that have your public key file. So especially if you leave the password blank, protect your private file!
You should now have 2 files in .ssh/. One will be your private key (id_dsa) and the other will have a .pub extension.

Now,
user@machine:~$ scp ~/.ssh/id_dsa.pub user@remote_host:.ssh/

Then log into the remote host,
user@machine:~$ ssh anotheruser@remote_host

And move the key into the authorized_keys file
anotheruser@remote_host:~$ cd .ssh
anotheruser@remote_host:~/.ssh$ cat id_dsa.pub >> authorized_keys2


And set the file permissions, if the file didn’t already exist.
anotheruser@remote_host:~/.ssh$ chmod 640 authorized_keys2

and delete the .pub file
anotheruser@remote_host:~/.ssh$ rm id_dsa.pub

You can now log out of the remote host. Try logging in again, it should just ask for the master password. For subsequent logins, no password should be needed.

Now, how about setting up an alias for the host name, and having SSH remember your login name? On the local system open the ~/.ssh/config file. Create it if necessary. Simply set up the aliases like this:

Host mybox
User anotheruser # remote login, if different
Hostname mybox.somedomain.com

Host anotherbox
Hostname anotherbox.anotherdomain.org


Once this is all set up, you should be able to ssh mybox, and the system will automatically select user name ‘myname’ and use the DSA key pair instead of a password.

Well if you found me by the google because precisely this happened to you, you’re in luck. I just repaired mine for the wonderful sum of 63 cents. Anyway, let’s move on.

To perform this fix you need to be somewhat comfortable with a soldering iron, and be willing to take your amp apart. If you aren’t very good with an iron, you’ll want to read through some how-to pages elsewhere until you’re comfortable with replacing capacitors on a printed circuit board.

My C370 ripped apart on my workbench

So it turns out the problem with the design is that NAD decided to put a hot-running diode right beside (touching!) some electrolytic capacitors. This dries out the caps, which changes their values. When their values change, the protection circuit goes all wonkey.

The protection circuit

First of all, locate the protection circuit pictured above. As you can see from the picture, mine had some obvious heat problems. Nothing looks broken per se, but it looks nicely toasted, especially on the right side and top. To get it working again, I’d reccomend replacing the three topmost capacitors. Their values are 4.7uF, 47uF and 10uF all rated at 50V. I wouldn’t get anything larger than 50V as I’m not sure if it would fit.

**edit: According to Stu in the comments below, some amps have 63V caps, so I guess slightly larger caps might fit. Either way I wouldn’t recommend replacing your capacitors with new ones of a lower value than stock**

For those who are interested, here is the schematic for the protection circuit:

NAD C370 Protection Circuit Schematic

With those three caps replaced, the amp should work fine. But in a couple years, those caps will die too. I found a great solution on a forum: move the diode to the other side of the board. Watch the polarity!

Diode on the back of the board

Now apply power, hope there aren’t any sparks, and enjoy the music!

Playing around with it earlier, I got arcs as long as 10″ from it. Now the search is on for another MOT or perhaps an old neon sign transformer.

Not much point, really.  Just linking it so the googlebot checks it out.

Just came across this excellent list of keyboard shortcuts for linux. Definitly worth a look.
linkage

I didn’t think to take a pic of it, so I lifted this one from www.overclockersonline.net.

Either way, this beast looks impressive. So impressive in fact that I thought it might have similar performance to my water system. The sink is half the size of my radiator, and its directly connected to the cpu. Sounds like a good plan.

My dreams started getting crushed when I went to install this piece. According to the instructions it just bolted to the standard backplate that comes w/ ones motherboard. It definitly didn’t. The bolts supplied were far too short. In the end I had to use the backplate and nuts from my waterblock to get it installed. The stock Thermalright hardware also only allows for a top-to-bottom layout on 939 boards. I was under the impression I could have a front-to-back layout, so it would blow the hot air right out the back of the case. Overall not very impressed.

I finally managed to get the door on my case to shut (I had some clearance issues), and started doing some testing. The result? Absolutely terrible performance. I don’t know if water jaded me, or if this thing is just a POS. I get ~40c idle, and ~50c load on an A64 4000+ 939 San Diego core. Maybe I mounted it wrong? I remounted the sink 4 times trying both arctic silver 5 and the supplied compound, cleaning with alcohol in between. I still haven’t managed to get the temps down. I guess air cooling just isn’t that impressive.

Maybe I’m an idiot to have thought this was a bill for even a short moment, but with the outrageous rates that this company charges, I’m sure they’re making a killing from the few responses they do get.

Bastards.

No, worse than that. You wont even believe. Just listen to this nonsense.

Him: Write down one cent. How would you write one cent?
Floor Manager: 0.01
Him: How do you write half a cent
Floor Manager: uhh that would be… point… 0, 0, 5 of a cent… i dont know if thats right.. I’m not a mathematician.

…I’m speechless.

edit: Listen! -> Verizon vs Math round 2 - Peter’s battle.

$abcde -o mp3,flac,ogg

Its as easy as that. You’ll have to change the settings in the config file. Its located at /etc/abcde.conf (obviously..). I uncommented and changed these:

LAMEOPTS=’-V 0′

OGGENCOPTS=’-q 6′

To set mp3 encoding at alt-preset-extreme, and ogg encoding at Q6.

I have also edited a little bash script I found. It’s available here. When run, it will make .m3u files for all mp3s in the current directory and all subdirectories. Just put it in your path.