here is the logs i got:
=======================

101026 15:55:57 mysqld_safe Starting mysqld daemon with databases from /srv/database/mysql/data
101026 15:55:57 [Note] Flashcache bypass: disabled
101026 15:55:57 [Note] Flashcache setup error is : ioctl failed

101026 15:55:57 [Note] Plugin 'FEDERATED' is disabled.
/usr/local/Percona-Server-5.1.49-12/libexec/mysqld: Table 'mysql.plugin' doesn't exist
101026 15:55:57 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
InnoDB: The InnoDB memory heap is disabled
InnoDB: Mutexes and rw_locks use GCC atomic builtins
InnoDB: Compressed tables use zlib 1.2.3
InnoDB: unable to create ./innodb_status.8146: Permission denied
101026 15:55:57 [ERROR] Plugin 'InnoDB' init function returned error.
101026 15:55:57 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
101026 15:55:57 [Warning] Storage engine 'SPHINX' has conflicting typecode. Assigning value 42.
101026 15:55:57 [ERROR] Unknown/unsupported table type: InnoDB
101026 15:55:57 [ERROR] Aborting

101026 15:55:57 [Note] /usr/local/Percona-Server-5.1.49-12/libexec/mysqld: Shutdown complete

101026 15:55:57 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended

here is my conf:
================

# vim: ts=8 shiftwidth=8
#
# The following options will be passed to all MySQL clients
#
[client]
port					= 3306
socket					= /tmp/mysqld.sock

[mysql]
prompt					= \R:\m \u@{-INSTANCE-}:\d [\c]>\_

#
# The following options will be passed to MySQL server
#
[server]
port					= 3306
socket					= /tmp/mysqld.sock
basedir					= /usr/local/mysql
datadir					= /srv/database/mysql/data

[mysqld]
init-connect				= 'SET NAMES utf8'
init-file				= /srv/database/mysql/init/init.sql
event-scheduler				= 1
skip-external-locking
skip-name-resolve
skip-networking
sql_mode				= TRADITIONAL,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE

#server-id				= {-SERVER_ID-}
default-storage-engine			= InnoDB
#report-host				= {-HOST-}.{-INSTANCE-}
auto_increment_offset			= 1
auto_increment_increment		= 2
#log-slave-updates


general_log				= 0
general_log_file			= /srv/database/mysql/log/general.log
log-error				= /srv/database/mysql/log/error.log
#log-bin					= /srv/database/mysql/log/binary
long-query-time				= 3
slow-query-log				= 0
slow-query-log-file			= /srv/database/mysql/log/slow_query.log
max-binlog-size				= 1000M
expire_logs_days			= 4
relay-log				= /srv/database/mysql/log/relay

table_cache				= 512

max_connections				= 800
key_buffer_size				= 100M
sort_buffer_size			= 100M
read_buffer_size			= 512k
max_allowed_packet			= 16M
tmp_table_size				= 64M
max_heap_table_size			= 64M
ft_min_word_len				= 3
myisam_sort_buffer_size			= 100M
thread_cache_size			= 4

query_cache_size			= 128M

thread_concurrency			= 12
wait_timeout				= 30

# This works great, as long as we don't run out of memory.
#tmpdir                                  = /dev/shm
tmpdir                                  = /srv/database/mysql/tmp/

innodb_status_file
innodb_file_per_table
innodb_rollback_on_timeout
# The lack of "autoextend " is intentional
innodb_data_file_path			= ibdata1:200M
innodb_buffer_pool_size			= 256M
innodb_additional_mem_pool_size		= 8M
innodb_log_file_size			= 64M
innodb_log_buffer_size			= 16M
innodb_flush_log_at_trx_commit		= 2
innodb_flush_method			= O_DIRECT

[mysql.server]
user					= mysql

[mysqld_safe]
log-err					= /srv/database/mysql/log/error.log
pid-file				= /var/run/mysqld/mysqld.pid

[mysqldump]
quick
max_allowed_packet			= 16M