William Morder via tde-users wrote:
That is just a kind of "ghost" (so to speak), traces of a process that is no longer actually running.
In my case the parent firefox process was still running. The child process was killed because of "high quality" developers of web pages are producing such content that overloads the system and oom killer kicks in. The stupid thing is, it causes the PC to consume also more power untill it decides to die or be killed.