Hi<br><br>I am thinking it is a problem with the internal wireless card. I have just removed it.<br><br>I ran the machine for about 
ten minutes with no connection to the net and it was fine. I am writing 
this from within Ubuntu using my trusty Edimax wireless PCMCIA card. It 
has been going for about 15 mins with the card in and so far so good.<br>
<br>I had a similar problem about a year ago with a Broadcom based 
wireless card in a ThinkPad 240x. It would lock the machine up, so I 
started using the Edimax one.<br><br>It must be a driver issue as the 
Broadcom based Buffalo card and the internal Intel 2200BG both work fine
 under XP. The Intel works under Ubuntu with no additional drivers 
needed, but the Broadcom needed restricted drivers installed.<br>
<br>The Edimax works without drivers. Fingers crossed that is the 
problem. It seems a common thing with Ubuntu that ropey drivers or dodgy
 hardware can lock a machine up.<br><br>I was running Ubuntu on an old 
PPC Mac and I had lock ups in that and it was down to a USB 2 card I had
 installed. It worked but it would lock the machine up after about 10 
minutes.<br>
<br>Well, fingers crossed it has resolved it.<br><br>Simon<br><br><div class="gmail_quote">On Sun, Jan 2, 2011 at 9:55 PM, Simon Royal <span dir="ltr">&lt;<a href="mailto:mrsimonroyal@gmail.com">mrsimonroyal@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hi<br><br>I have had my ThinkPad for just under a week. The day it arrived I upgraded it (maxxed the RAM to 2x512MB sticks, upped the hard drive to a 60GB and fitted an Intel 2200BG internal wireless card without antenna) and installed XP Home and Ubuntu 10.10.<br>

<br>It has been running fine and I haven&#39;t changed the hardware at all.<br><br>This evening it started locking up shortly after boot. It will run for about 2 minutes then lock up. It requires the power button to be held down until the machine turns off. This has done it about 5 times in the last hour.<br>

<br>My default OS is Ubuntu, so I booted into XP and it doesnt do it. I am writing this email on it in XP and it has been running fine for about 30 mins.<br><br>Any ideas?<br><br>Simon<br clear="all"><font color="#888888"><br>
-- <br><span style="border-collapse: separate; color: rgb(0, 0, 0); font-family: &#39;Times New Roman&#39;; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; font-size: medium;"><span style="border-collapse: collapse; font-family: arial,sans-serif; font-size: 13px;"><span style="font-family: Tahoma,Verdana,Arial,sans-serif; font-size: 13px; color: rgb(42, 42, 42);"><pre style="white-space: normal; line-height: 17px;">
--- Twitter: <a href="http://twitter.com/SimonRoyal" style="color: rgb(162, 97, 12); line-height: 17px; font-weight: inherit; text-decoration: none;" target="_blank">http://twitter.com/SimonRoyal</a> - LowEndMac: <a href="http://tinyurl.com/macspectrum" style="color: rgb(162, 97, 12); line-height: 17px; font-weight: inherit; text-decoration: none;" target="_blank">http://tinyurl.com/macspectrum</a> - Skype: Simon-Royal.<br style="line-height: 17px;">

--- IBM ThinkPad R31 running Ubuntu 10.10 &amp; Windows XP Home. Apple PowerBook G3 &#39;Pismo&#39; running OSX 10.4. Sony Ericsson Xperia X10 Mini Pro running 2.1<br></pre></span></span></span><br><br>
</font></blockquote></div><br><br clear="all"><br>-- <br><span style="border-collapse: separate; color: rgb(0, 0, 0); font-family: &#39;Times New Roman&#39;; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; font-size: medium;"><span style="border-collapse: collapse; font-family: arial,sans-serif; font-size: 13px;"><span style="font-family: Tahoma,Verdana,Arial,sans-serif; font-size: 13px; color: rgb(42, 42, 42);"><pre style="white-space: normal; line-height: 17px;">
--- Twitter: <a href="http://twitter.com/SimonRoyal" style="color: rgb(162, 97, 12); line-height: 17px; font-weight: inherit; text-decoration: none;" target="_blank">http://twitter.com/SimonRoyal</a> - LowEndMac: <a href="http://tinyurl.com/macspectrum" style="color: rgb(162, 97, 12); line-height: 17px; font-weight: inherit; text-decoration: none;" target="_blank">http://tinyurl.com/macspectrum</a> - Skype: Simon-Royal.<br style="line-height: 17px;">
--- IBM ThinkPad R31 running Ubuntu 10.10 &amp; Windows XP Home. Apple PowerBook G3 &#39;Pismo&#39; running OSX 10.4. Sony Ericsson Xperia X10 Mini Pro running 2.1<br></pre></span></span></span><br><br>