user warning

user warning: MySQL server has gone away query: INSERT INTO drup_watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (1, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:135:\"MySQL server has gone away\nquery: UPDATE drup_variable SET value = 'i:1217455392;' WHERE name = 'update_last_check'\";s:5:\"%file\";s:49:\"/home/a1925754/public_html/includes/bootstrap.inc\";s:5:\"%line\";i:466;}', 3, '', 'http://silentnight.net76.net/?q=admin', 'http://silentnight.net76.net/?q=user/1', ' ***.***.***.*** ', 1217455392) in /includes/database.mysql.inc on line 128

***.***.***.*** = my IP address