title: Eclipse freezes when creating project/class (no loading bar showing)
body: <p>When creating new project (Java) in Eclipse Mars.2 version, there's a problem, that appears as like "freezing" of Eclipse: after clicking finish, CPU usage jumps high, it shows that it is building the project but everything is still - there's not even a loading bar underneath.
  <p>It appears the same when creating Java classes. The same happens when I start program from terminal - with and without "sudo". While loading everything, I seem to see no errors.<p>
  What could be wrong? Dunno with what I should even start, but tell me, what specific info I should provide to investigate this.
  I have tried changing GTK theme to something else, reinstalled Eclipse n-th times (did that by unarchiving and using installer provided from eclipse.org), reinstalled Java from ground-up, still nothing changes.</p>
  
  <p>Dealing with this over 2 months, still can't find any solution. Many things I have tried, even researched related topics before posting this. Nothing helped from there.</p>
  
  <p>Using now Ubuntu 16.04 (unstable, but it shouldn't be a problem, I guess).</p>