I been having problems once in a while where Firefox or Thunderbird won't start. However when I go into the task manager under processes, I see (some times multiple times) firefox.exe or thunderbrid.exe . I click the end process accept the warning, but it will not shut down. The only solution I have is to restart Windows and hope this time both applications come up.
Any ideas as to what could cause they applications to fail to load and/or shut-down when forced to do so?