Create table fails with unclear warning message

I am using codership-mysql/0.8 with innodb_plugin
and trying to create sysbench multi-tables in parallel , using next command:

sysbench --test=tests/db/parallel_prepare.lua --oltp-tables-count=16 --num-threads=16 --oltp-table-size=25000000 --mysql-socket=/var/lib/mysql/mysql.sock run

In result error.log filled with messages:

110615 20:47:22 [Warning] WSREP: TO isolation failed for: 3, sql: CREATE TABLE sbtest10 (
id INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
k INTEGER UNSIGNED DEFAULT '0' NOT NULL,
c CHAR(120) DEFAULT '' NOT NULL,
pad CHAR(60) DEFAULT '' NOT NULL,
PRIMARY KEY (id)
) /*! ENGINE = innodb MAX_ROWS = 1000000 */
110615 20:47:22 [Warning] WSREP: TO isolation failed for: 3, sql: CREATE TABLE sbtest1 (
id INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
k INTEGER UNSIGNED DEFAULT '0' NOT NULL,
c CHAR(120) DEFAULT '' NOT NULL,
pad CHAR(60) DEFAULT '' NOT NULL,
PRIMARY KEY (id)
) /*! ENGINE = innodb MAX_ROWS = 1000000 */

and in fact only one table "sbtest2" created after this command, so it seems other tables failed.

Maybe there is reason why, but Warning message "[Warning] WSREP: TO isolation failed for: 3,"
does not provide much information.