title: MATLAB: LSQNONLIN changes in R2011a?
body: <p>I'm working with a matlab code package that was handed down to me. It was written in <code>R2007b</code> version, and I saw it perform. My lab just acquired <code>R2011a</code> and although the package runs without errors, it produces different (and notably worse) results.</p>
  
  <p>I've zeroed in on the conclusion that the difference comes when executing <a href="http://www.mathworks.com/help/toolbox/optim/ug/lsqnonlin.html" rel="nofollow">lsqnonlin</a></p>
  
  <p>Were there any known and significant changes in the versions? How would I track down the differences?<br />
  I'll be glad to supply parts of code if needed.</p>
  
  <p>Thank you!</p>