user4356: I am running bitcoind and the blockchain download is very slow at 200 blocks per hour. 
I am  at 225146 and at the current speed, it would take bitcoind a month to catch up.
Here is my output from bitcoind getinfo
{
"version" : 32400,
"balance" : 0.00000000,
"blocks" : 225305,
"connections" : 5,
"proxy" : "",
"generate" : false,
"genproclimit" : -1,
"difficulty" : 4367876.00084220,
"hashespersec" : 0,
"testnet" : false,
"keypoololdest" : 1378312057,
"paytxfee" : 0.00000000,
"errors" : ""
}

CPU usage is at 10 Percent and I am using 50% of memory.
Any ideas why the download is so slow?

user5406: The synchronization process will not only download the blockchain, but also verify each block. Besides the computational effort, this generates a lot of disk accesses, so if you have a slow HDD, an encrypted disk, or are doing a lot of other i/o at the same time that might be your bottleneck.
See also here: How to increase the speed of synchronisation?
Edit: One might also want to check if bitcoind is up-to-date, the repositories of popular distributions can be lagging somewhat behind on fast developing projects.

user251: 
"version" : 32400

Oh my goodness. That is a very old version.
New versions dramatically improve chain synchronization times. Update from your current version of 0.3.24 to 0.8.5.
https://bitcoin.org

4356: <p>I am running bitcoind and the blockchain download is very slow at 200 blocks per hour. </p>

<p>I am  at 225146 and at the current speed, it would take bitcoind a month to catch up.</p>

<p>Here is my output from bitcoind getinfo</p>

<pre><code>{
"version" : 32400,
"balance" : 0.00000000,
"blocks" : 225305,
"connections" : 5,
"proxy" : "",
"generate" : false,
"genproclimit" : -1,
"difficulty" : 4367876.00084220,
"hashespersec" : 0,
"testnet" : false,
"keypoololdest" : 1378312057,
"paytxfee" : 0.00000000,
"errors" : ""
}
</code></pre>

<p>CPU usage is at 10 Percent and I am using 50% of memory.</p>

<p>Any ideas why the download is so slow?</p>
 5406: <p>The synchronization process will not only download the blockchain, but also verify each block. Besides the computational effort, this generates a lot of disk accesses, so if you have a slow HDD, an encrypted disk, or are doing a lot of other i/o at the same time that might be your bottleneck.</p>

<p>See also here: <a href="https://bitcoin.stackexchange.com/questions/9277/how-to-increase-the-speed-of-synchronisation">How to increase the speed of synchronisation?</a></p>

<p>Edit: One might also want to check if <em>bitcoind</em> is up-to-date, the repositories of popular distributions can be lagging somewhat behind on fast developing projects.</p>
 251: <blockquote>
  <p>"version" : 32400</p>
</blockquote>

<p>Oh my goodness. That is a very old version.</p>

<p>New versions dramatically improve chain synchronization times. Update from your current version of 0.3.24 to 0.8.5.</p>

<p><a href="https://bitcoin.org" rel="nofollow">https://bitcoin.org</a></p>
