升级到了PHP5.3.10和MySQL5.1.61，数据库查询总有两稍迟钝

ABC从 2012-02-28 10:49:30

因为哈希碰撞漏洞原因，升级了PHP和MySQL，但现在程序在查询数据库时总有两秒的迟钝，很不爽啊。
用的是PHP的Mysqld连接的数据库，下面的MySQL的配置。请高人指点。

[client]
port=3306

[mysql]
port=3306
default-character-set=UTF8

[mysqld]

basedir = c:/server/mysql
#只监本地端口，不对外公开
bind-address=127.0.0.1
datadir = c:/server/mysql/database

default-character-set=UTF8
default-storage-engine=MyISAM

# Set the SQL mode to strict
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

default-time-zone = '+8:00'
interactive_timeout = 120

language= c:/server/mysql/share/english
log_error = c:/erver/logs/mysql.log
key_buffer_size=128M
max_connections = 100
pid_file=C:/Server/temp/mysql.pid
query_cache_size = 128M
query_cache_type = 1
sort_buffer_size = 32M
table_cache = 256
thread_cache=8
#单个CPU核心数*CPU个数
thread_concurrency = 2

tmpdir=c:/server/temp/mysql
#*** MyISAM Specific options

myisam_sort_buffer_size=16M
key_buffer_size = 8M

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