title: IntelliJ IDEA on Ubuntu: index corruption & rebuild
body: <p>I'm trying out IntelliJ IDEA in earnest for the first time and have installed version 10.0.1 on 64 bit Ubuntu 10.04 with Sun JDK 1.6.0_21.</p>
  
  <p>Every time I start IDEA it tells me the indexes have become corrupted and need to be rebuilt. Any idea what might be causing this or how I might go about diagnosing the problem?</p>
  
  <p>I haven't noticed this problem when I open the same project on the same version of IDEA on my MacBook Pro.</p>
  
  <p>(I'm working on a Grails application with several plugins/modules, if that's of any relevance.)</p>
  
  <p>Thanks.</p>