4.0.4RC4 on Linux 2.2.16

Strange things happening : I've got a make error with coredump... But no core... Typed make again and all went OK. I retried after a make distclean but nothing strange showed up. Overall Success. Here is the list of failed tests : Linux 2.2.16 ./configure --with-mysql=/usr --enable-discard-path --enable-force-cgi-redirect File type functions (001.phpt) ... failed DB_Error/DB_Warning test (db_error.phpt) ... failed DB configurable error handler test (db_error2.phpt) ... failed DB::factory test (db_factory.phpt) ... failed DB::parseDSN test (db_parsedsn.phpt) ... failed MySQL DB::connect (001.phpt) ... failed MySQL DB fetch modes (002.phpt) ... failed PEAR constructor/destructor test (pear1.phpt) ... failed PEAR_Error test (pear_error.phpt) ... failed PEAR_Error in die mode (pear_error2.phpt) ... failed dirname test (dirname.phpt) ... failed Simple POST Method test (002.phpt) ... failed GET and POST Method combined (003.phpt) ... failed Two variables in POST data (004.phpt) ... failed Three variables in POST data (005.phpt) ... failed Tests failed: 15 ( 18%)