I know Compress-ZLib 1.42 is out-of-date, but at least on maint it should continue to build and test as before. I get the following failure with both blead and maint, with and without using threads, both 32 and 64-bit (only tested on Linux so far). The test failures don't happen with 5.8.8. Andreas, could you do a BBC check against Compress-Zlib-1.42? Cheers, -Jan ~/Compress-Zlib-1.42> make test PERL_DL_NONLAZY=1 /home/jand/blead/bin/perl "-MExtUtils::Command::MM" "-e" "test_harness(0, 'blib/lib', 'blib/arch')" t/*.t t/01version.....ok t/02zlib........FAILED tests 35-37, 43-45, 51-53, 60, 62, 64 Failed 12/239 tests, 94.98% okay t/03examples....FAILED test 6 Failed 1/16 tests, 93.75% okay t/04encoding....ok t/05gzsetp......ok t/06gzdopen.....ok Failed Test Stat Wstat Total Fail List of Failed ------------------------------------------------------------------------------- t/02zlib.t 239 12 35-37 43-45 51-53 60 62 64 t/03examples.t 16 1 6 Failed 2/6 test scripts. 13/305 subtests failed. Files=6, Tests=305, 2 wallclock secs ( 0.55 cusr + 0.09 csys = 0.64 CPU) Failed 2/6 test programs. 13/305 subtests failed.Thread Next