I get following type of warnings on my Drupal Site which usually disappear when I flush the cache
"Warning: MySQL server has gone away query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (1, 'php', '%message in %file on line %line.',
Any idea why it happens and how flushing the cache clears it all?
Thanks in advance!
This issue has been posted multiple times to drupal.org.
Best of luck fixing the issue.