#1558 - Column count of mysql.proc is wrong. Expected 20, found 16. Created with MySQL 50156, now running 50158. Please use mysql_upgrade to fix this error.

This error is encountered by me when i try to do anything with stored procedures

http://x10hosting.com/forums/free-hosting/165734-problem-mysql-upgrade-5-00-91-5-01-58-a.html has a similar problem and the admin fixed it.