Problemas con subida de avatar =S (urgente)

Database error in vBulletin 3.7.4:

Invalid SQL:
UPDATE customavatar SET
	userid = 12,
	dateline = 1229747878,
	filename = 'phenomenalgif22wmep8.gif',
	width = 60,
	height = 60,
	filesize = 739146
        filedata = 'GIF87a<\0<\0ç×\0\0\0\03\0\0f\0\0....(vienen muchos caractéres raros...)
	width_thumb = 60,
	height_thumb = 60,
	filedata_thumb = 'GIF87......... (idem filedata.)
WHERE userid = 12;

MySQL Error   : Got a packet bigger than 'max_allowed_packet' bytes
Error Number  : 1153
Request Date  : Saturday, December 20th 2008 @ 02:37:58 AM
Error Date    : Saturday, December 20th 2008 @ 02:37:58 AM
Script        : http://www.pcw-arena.com/forum/admincp/usertools.php?do=updateavatar
Referrer      : http://www.pcw-arena.com/forum/admincp/usertools.php?do=avatar&u=12
IP Address    : 201.223.180.16
Username      : Vincent de la Torre
Classname     : vb_database
MySQL Version : 5.0.45-community

QUE ALGUIEN ME PUEDA AYUDAR PLEEEAASEE!