Hi! I just merged MySQL 5.1.53 into MariaDB and as part of that, did run the pbxt test suite. I encountered this test failure: mysql-test-run --suite=pbxt URRENT_TEST: pbxt.insert --- /home/my/maria-5.1-release/mysql-test/suite/pbxt/r/insert.result 2010-11-25 12:02:26.083226000 +0200 +++ /home/my/maria-5.1-release/mysql-test/suite/pbxt/r/insert.reject 2010-11-25 19:33:48.281738504 +0200 @@ -298,7 +298,7 @@ insert into t2 select t1.* from t1, t2 t, t3 where t1.id1 = t.id2 and t.id2 = t3.id3; select count(*) from t2; count(*) -25500 +25495 drop table t1,t2,t3; create table t1 (a int, b int); insert into t1 (a,b) values (a,b); This only happened once for this test. (I did get similar failures with one other test for that run, but not for new runs). I could not repeat it by running the test or suite again. I also tested to run the test with valgrind, but not problems found. I noticed this also happens in buildbot from time to time: See http://buildbot.askmonty.org/buildbot/builders/gentoo-x86-dbg/builds/396/ste..., search after pbxt.insert Paul, have you ever encountered something like this? Any clues where to start looking? (The tree I am working with is 5.1-release) Regards, Monty