Error Number : 1153

[محروم.كوم]

i got this error while editing forums

Code:
MySQL Error : Got a packet bigger than 'max_allowed_packet' bytes
Error Number : 1153
Request Date : Friday, August 7th 2009 @ 10:27:00 PM
Error Date : Friday, August 7th 2009 @ 10:27:07 PM

Script : xxx/admincp/forum.php?do=update
Referrer : xxx/admincp/forum.php?do=edit&f=1&s=
IP Address : xxxxxx
Username : xxxxxx
Classname : vB_Database
MySQL Version : 5.0.81-community __DEFINE_LIKE_SHARE__