What's the difference between an Exception and an Error?

I know that Exceptions are meant to be recoverable and Errors are non-recoverable, but this doesn't help me since
(1) Error is derived from Exception (so any catch(Exception) can _recover_ from an Error), and
(2) there are also many catch(Error) which seems that an Error is not quite that bad.

Take Phobos for example. Why are some problems throwing an Error and others an Exception?

In either case, it seems like the Error class should not derive from the Exception class, since catching one should not consume the other.

Who has some clue what's going on there?

L.

Seems I canceled that first post a few milliseconds too late :S