user11727: Can I do mining with a normal PC in my house?
I will setup Linux (Ubuntu) for mining. It will be open 24/7. I don't have too many expectations. Maybe 0.1 in one week?

user11893: To get 0.1BTC in one week with current difficulty levels you need to have at least 3.000 MHash/sec ASICminer.
A regular GPU will provide just 50 ~ 60 MHashes so it will take quite a bit longer to achieve 0.1BTC.
My recommendation is to get one of these ASIC miners to get a better performance:
http://www.ebay.com/sch/i.html?_odkw=asicminer+block+erupter&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR5.TRC1.A0.Xasicminer+usb+block+erupter&_nkw=asicminer+usb+block+erupter&_sacat=0

user11862: 
Can i do mining with a normal PC?

Yes, you can.

I don't have too many expectations. Maybe 0,1 in one week?

No, not possible. You will effectively compete against all computational resources on Earth, that are now cracking this nut. If I can estimate, a humble home PC will produce around 1 - 100 MH/s, based on CPU or GPU mining stats. This range covers different CPUs and single-GPU computers. You can compare hash rate with the profit estimate using this calculator. Based on the hash-rate, your electricity bill will much out-weight any profit from mining.
To achieve a 0,1 BTC/week you'd have to invest in a pretty expensive, power-hungry ASIC box that can produce tens of GH/sec, subject to ever-increasing complexity.

11727: <p>Can I do mining with a normal PC in my house?</p>

<p>I will setup Linux (<a href="http://en.wikipedia.org/wiki/Ubuntu_%28operating_system%29" rel="noreferrer">Ubuntu</a>) for mining. It will be open 24/7. I don't have too many expectations. Maybe 0.1 in one week?</p>
 11893: <p>To get 0.1BTC in one week with current difficulty levels you need to have at least 3.000 MHash/sec ASICminer.</p>

<p>A regular GPU will provide just 50 ~ 60 MHashes so it will take quite a bit longer to achieve 0.1BTC.</p>

<p>My recommendation is to get one of these ASIC miners to get a better performance:
<a href="http://www.ebay.com/sch/i.html?_odkw=asicminer+block+erupter&amp;_osacat=0&amp;_from=R40&amp;_trksid=p2045573.m570.l1313.TR5.TRC1.A0.Xasicminer+usb+block+erupter&amp;_nkw=asicminer+usb+block+erupter&amp;_sacat=0" rel="nofollow">http://www.ebay.com/sch/i.html?_odkw=asicminer+block+erupter&amp;_osacat=0&amp;_from=R40&amp;_trksid=p2045573.m570.l1313.TR5.TRC1.A0.Xasicminer+usb+block+erupter&amp;_nkw=asicminer+usb+block+erupter&amp;_sacat=0</a></p>
 11862: <blockquote>
  <p>Can i do mining with a normal PC?</p>
</blockquote>

<p>Yes, you can.</p>

<blockquote>
  <p>I don't have too many expectations. Maybe 0,1 in one week?</p>
</blockquote>

<p>No, not possible. You will effectively compete against all computational resources on Earth, that are now cracking this nut. If I can estimate, a humble home PC will produce around 1 - 100 MH/s, based on <a href="https://en.bitcoin.it/wiki/Mining_hardware_comparison">CPU or GPU mining stats</a>. This range covers different CPUs and single-GPU computers. You can compare hash rate with the profit estimate using <a href="http://www.bitcoinx.com/profit/">this calculator</a>. Based on the hash-rate, your electricity bill will much out-weight any profit from mining.</p>

<p>To achieve a 0,1 BTC/week you'd have to invest in a pretty expensive, power-hungry ASIC box that can produce tens of GH/sec, subject to ever-increasing complexity.</p>
