mysqli Status Update

I am having all sorts of problems testing the mysqli extension. Some of the functions work fine, but lots of others (mysqli_bind_output()) aren't. Just to make sure I wasn't crazy, I just rebuilt PHP from the CVS and ran the test script. Only 22/60 mysqli unit tests actually pass. Is this normal or is mysqli still experimental? I'm using Mac OS X and 5.0.0-alpha-standard. Should I switch to 4.1 instead? I'd prefer not to have 3 copies of MySQL (4.0, 4.1, and 5.0) on my laptop, but I can do it if need be. -adam