lsphp5 is using too much CPU

[hpham]

When using top, here is the result

top - 23:09:01 up 15 days, 13:04, 1 user, load average: 10.80, 10.31, 8.08
Tasks: 127 total, 16 running, 111 sleeping, 0 stopped, 0 zombie
Cpu(s): 45.6%us, 3.7%sy, 0.0%ni, 0.5%id, 0.0%wa, 0.1%hi, 0.0%si, 50.2%st
Mem: 4194304k total, 2590184k used, 1604120k free, 223184k buffers
Swap: 2097144k total, 0k used, 2097144k free, 1790964k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
23648 mysql 15 0 360m 79m 4864 S 52 2.0 10:44.56 mysqld
8301 user-name 16 0 153m 46m 25m R 25 1.1 0:07.09 lsphp5
7919 user-name 19 0 155m 50m 29m S 24 1.2 0:13.80 lsphp5
8091 user-name 22 0 153m 46m 25m R 18 1.1 0:14.10 lsphp5
8352 user-name 19 0 154m 46m 25m R 16 1.1 0:05.84 lsphp5
7897 user-name 17 0 156m 47m 26m R 15 1.2 0:16.48 lsphp5
8256 user-name 16 0 153m 46m 25m R 12 1.1 0:08.14 lsphp5

Usually, I don't see that much. Is there any way to find out it's because of bad script, or bad configuration of my lsws?

Thanks.