When running Pharo 30366 tests on Pharo VM 6.0-pre (21.0) on a 10.6.8 mac I get different results when I open the image and run the tests compared to when I saved and quit the image and then re-run the tests. 2nd time results: 11287 run, 11232 passes, 12 skipped, 26 expected failures, 6 failures, 23 errors, 0 unexpected passes Failures: DelayTest>>#testMultiProcessWaitOnSameDelay ReleaseTest>>#testUnknownProcesses NetNameResolverTest>>#testLocalHostName ProcessTest>>#testHighPriorityOverridesWaitTime BlockClosureTest>>#testTrace ReleaseTest>>#testObsoleteBehaviors Errors: NBPointerArgumentsTests>>#testEnumCase1ByteArray NBPointerArgumentsTests>>#testEnumCase1ExternalAddress NBPointerArgumentsTests>>#testEnumCase2ByteArray NBPointerArgumentsTests>>#testEnumCase2ExternalAddress NBPointerArgumentsTests>>#testEnumCase3ByteArray NBPointerArgumentsTests>>#testEnumCase3ExternalAddress NBPointerArgumentsTests>>#testEnumCase4ByteArray NBPointerArgumentsTests>>#testEnumCase4ExternalAddress NBPointerArgumentsTests>>#testIntCase1ByteArray NBPointerArgumentsTests>>#testIntCase1ExternalAddress NBPointerArgumentsTests>>#testIntCase2ByteArray NBPointerArgumentsTests>>#testIntCase2ExternalAddress NBPointerArgumentsTests>>#testIntCase3ByteArray NBPointerArgumentsTests>>#testIntCase3ExternalAddress NBPointerArgumentsTests>>#testIntCase4ByteArray NBPointerArgumentsTests>>#testStructCase1ByteArray NBPointerArgumentsTests>>#testStructCase1ExternalAddress NBPointerArgumentsTests>>#testStructCase2ByteArray NBPointerArgumentsTests>>#testStructCase2ExternalAddress NBPointerArgumentsTests>>#testStructCase3ByteArray NBPointerArgumentsTests>>#testStructCase3ExternalAddress NBPointerArgumentsTests>>#testStructCase4ByteArray NBPointerArgumentsTests>>#testStructCase4ExternalAddress