title: Delphi XE takes one full core (100% CPU utilization)
body: <p>My Delphi started to overheat the CPU. As soon as I start Delphi, it will take a full core for itself and the coolers start to work really hard. There is any trick to fix this? </p>
  
  <p>I know that some people here on Stack Overflow will start to release hot steam if I use the words 'Delphi' and 'bug' together, but this is a really nasty bug since it will waste lot of energy (especially when on battery) and will make the computer age prematurely due to overheating.</p>
  
  <hr>
  
  <p>Update:</p>
  
  <p>The problem appears only if the active tab is a project (dproj) file. As soon as I switch to another file (pas) the CPU goes back to 0%-1%. It happens with ANY dproj file but it happens ONLY if IDE is visible on screen (non-minimized to taskbar). So it is obviously a rendering bug.</p>
  
  <hr>
  
  <p>Update:</p>
  
  <p>Looks like Warren P has found a way to produce a similar bug. See his answer.</p>
  
  <hr>
  
  <p>Update:</p>
  
  <p>I have seen the issue also appearing with a VERY large PAS unit but the max CPU utilization appears after I let Delphi IDE window in background (unused) for 3-5 minutes. I can solve it by minimizing the window to task bar or by switching to another IDE tab.</p>