VBSEO causing high load
 

I just contacted by my host and said that my forum is running multiple instances the following processor intensive php scripts which are constantly consuming 60% CPU, causing load on the server and crashed the webserver on it twice in the past one hour
Please see some of those processes below and their cpu usage:
=======
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
23833 jpimpmys 25 0 31696 16m 6376 R 52.8 0.4 1:27.55 /usr/bin/php /home/......../.........../vbseo.php
23834 jpimpmys 25 0 31696 16m 6376 R 64.7 0.4 3:59.83 /usr/bin/php /home/......../.........../vbseo.php
23367 jpimpmys 25 0 30732 16m 6352 R 60.7 0.4 4:05.54 /usr/bin/php /home/......../.........../vbseo.php
=======


What should I do to fix this?