The plugin_load test fails on PPC64 (maybe not always, but at least in the several tries I've made so far). It doesn't fail on x86, x86_64, or ppc, at least not in a similarly small number of tries. My best theory at the moment is that the test itself is wrong. Reported upstream at http://bugs.mysql.com/bug.php?id=42144 For the moment, just disable this test. diff -Naur mysql-5.1.30.orig/mysql-test/t/disabled.def mysql-5.1.30/mysql-test/t/disabled.def --- mysql-5.1.30.orig/mysql-test/t/disabled.def 2008-11-14 12:30:00.000000000 -0500 +++ mysql-5.1.30/mysql-test/t/disabled.def 2009-01-14 01:15:24.000000000 -0500 @@ -15,3 +15,5 @@ log_tables.test : Bug #37798: main.log_tables fails randomly on powermacg5 and windows slow_query_log_func.test : Bug #37962: *_func tests containing sleeps/race conditions events-bugs.test : Bug #39848, Bug #39863, Bug #39569, Bug #37774 +# +plugin_load : gives wrong answer on PPC64