Should a fresh install of Drupal have failing tests and what to do with the failing tests? I'm delving into the world of SimpleTest in Drupal. I started off by doing a fresh installation of Drupal 7 and running all the tests. I noticed there are a few tests that are failing, along with 1 test throwing an exception. Should a completely fresh install of Drupal 7 (or Drupal in general) have failing tests? I understand that in HEAD not all tests are going to pass. But, does Drupal get released along with a test suite that includes still failing tests?

I've tried searching the Drupal Core issue queue for some of the failing tests but haven't really found anything.

Edit

Based on comments so far, it seems that it is not intentional that a release of Drupal would include failing tests, even if for known issues that haven't been resolved as part of that release. Given that assumption, what is the best thing to do from there?
All tests are run on every patch that is posted on drupal.org, fully automated. Nothing is commited unless all tests are passing (It happens that something is commited that breaks the tests (for example if the tests only fail sometimes or the fail was not triggered on the patch for some other reason. However, development comes to a complete halt in such cases until the tests are working again.

But, these automated tests are run on equally configured, highly tuned linux servers (they currently run all of the core tests in ~40 minutes, I'm not going to ask how many hours it took you :)).

So, what is possible is that your system is somehow configured differently, uses different version of PHP, MySQL, the OS or something else. The tests should of course pass on every supported environment, so what I would recommend is creating a core issue, list the not-working tests (including the exact failures, e.g. with screenshots) and a detailed description of your set-up including your versions of PHP, MySQL, Apache, OS, extensions and so on.

I know that DamZ does regularly run all tests on different setups, including PostgreSQL, Windows and so on and I'm pretty sure that most except the Linux/MySQL env still have known failures. Edit: The site for this is on http://drupaltesting.org/, but it looks like it's been broken (the test environment, not the tests) for a few months now..