I just ran the test suite on Mac OS X 10.5 Snow Leopard.
I tested on:
ccl clisp sbcl ecl abcl allegro allegromodern cmucl
I believe these to be relatively up-to-date (SBCL built from git as of about 2-3 weeks ago; ccl 1.7; cmucl 20c; abcl 1.0.1; ecl 11.1.1; acl 8.2; clisp 2.49).
As far as I can tell from make test-all, all the tests passed on all my lisps (I believe make will halt unsuccessfully if a test fails).
Hope that helps,
r
PS I forget, were we going to put something on the web site to summarize such test results?