title: Selenium not deleting profiles on browser close
body: <p>I'm running some fairly simple tests using browsermob and selenium to open firefox browsers and navigate through a random pages. Each firefox instance is supposed to be independent and none of them share any cookies or cache. On my mac osx machine, this works quite nicely. The browsers open, navigate through a bunch of pages and then close.
  On my windows machine, however, even after the firefox browser closes, the tmp*<strong>*</strong> folders remain and, after leavin the test going on for a while, they begin to take up a lot of space. I was under the impression that each newly spawned browser would have its own profile, which it clearly does, but that it would delete the profile it made when the browser closes.
  Is there an explicit selenium command I'm missing to enforce this behaviour?</p>
  
  <p>Additionally, I've noticed that some of the tmp folders are showing up in AppData/Local/Temp/2 and that many others are showing up in the folder where I started running the script...</p>