Tested on Fedora 16 64bit:
Linux myhost 3.3.0-4.fc16.x86_64 #1 SMP Tue Mar 20 18:05:40 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

>>>>> Starting test058-syncrepl-asymmetric for bdb...
ERROR: Second site1 backend not replicated to central master
ERROR: Second site1 backend not replicated to central search

>>>>> Starting test058-syncrepl-asymmetric for hdb...
ERROR: Second site1 backend not replicated to central master
ERROR: Second site1 backend not replicated to central search
ERROR: entry not replicated to central master!
Race error found after 3 of 10 iterations

>>>>> Starting test058-syncrepl-asymmetric for mdb...
ERROR: Second site1 backend not replicated to central master
ERROR: Second site1 backend not replicated to central search