CMS cms keeps giving databse errors if enabled

[محروم.كوم]

i got the following errors if i enable my cms

or if its enabled and working . and i insert a new posting ,using the promote to article function
its also giving the same error


Database error in vBulletin 4.0.1:

Invalid SQL:

REPLACE INTO cache
SET cacheid = 'widget.1ee2d75aac186e791b30a4e71bd8c287',
expires = 1266428885,
created = 1266428585,
locktime = 0,
data = "O\"vB_Search_Results\"{s:23:

followed by heaps of database text
really long texts


at the bottom of the error list i get the following

MySQL Error : Got a packet bigger than 'max_allowed_packet' bytes

Error Number : 1153
Request Date : Wednesday, February 17th 2010 @ 06:43:05 PM
Error Date : Wednesday, February 17th 2010 @ 06:43:06 PM
Script : http://bullterrierforum.nl/bullforum...1-hondennieuws
Referrer : http://bullterrierforum.nl/bullforum...-beentjes.html
IP Address : 82.101.23XXXXX
Username : XXXX
Classname : vB_Database
MySQL Version : 5.0.81-community-log

now the last problem can be solved by setting the packet bits restriction from 1 mb to 8 orso
so its basically the first error what is nagging me
anyone got any idea? __DEFINE_LIKE_SHARE__