When i try to run the unit test for my projects, i get test succeeded. But in the log navigator i get warning saying 'All tests did not finish'. But the same code works fine in another machine and all tests succeeds without any warning. I searched for other posts related this and tried everything, but nothing works for me. And also all of a sudden some unit-tests fail without any reason, but succeeds when i run it again. I even tried resetting the simulator, nothing works.

Any suggestions?