Comment 2 for bug 1308016

Same thing happened to us today on production servers, two out of tree nodes crashed at the same time, while first node remained working!!!

installed versions:
Percona-Server-shared-51.x86_64 5.1.72-rel14.10.597.rhel6
Percona-XtraDB-Cluster-client.x86_64 1:5.5.34-23.7.6.565.rhel6
Percona-XtraDB-Cluster-galera.x86_64 2.8-1.162.rhel6
Percona-XtraDB-Cluster-server.x86_64 1:5.5.34-23.7.6.565.rhel6
Percona-XtraDB-Cluster-shared.x86_64 1:5.5.34-23.7.6.565.rhel6

140428 14:51:19 [ERROR] Slave SQL: Could not execute Write_rows event on table x.y; Duplicate entry ‘167176' for key 'subscriber_id_UNIQUE', Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event's master log FIRST, end_log_pos 311, Error_code: 1062
140428 14:51:19 [Warning] WSREP: RBR event 2 Write_rows apply warning: 121, 93581360
140428 14:51:19 [ERROR] WSREP: Failed to apply trx: source: d1d7af33-9e01-11e3-a5c8-0ef8a35689df version: 2 local: 0 state: APPLYING flags: 1 conn_id: 8418444 trx_id: 227697579 seqnos (l: 17217951, g: 93581360, s: 93581336, d: 93581359, ts: 1398685878256910366)
140428 14:51:19 [ERROR] WSREP: Failed to apply app buffer: seqno: 93581360, status: WSREP_FATAL
         at galera/src/replicator_smm.cpp:apply_wscoll():52
         at galera/src/replicator_smm.cpp:apply_trx_ws():118
140428 14:51:19 [ERROR] WSREP: Node consistency compromized, aborting...

Any info/help on this would be great.