symbolize was removed in puppet 3 - See http://projects.puppetlabs.com/issues/16791

lib/puppet/provider/mysql_grant/mysql.rb

@@ -177,7 +177,7 @@ Puppet::Type.type(:mysql_grant).provide(:mysql) do
         # transpose the lines, so we have key/value pairs
         privs = privs[0].zip(privs[1])
         privs = privs.select do |p| (/_priv$/) and p[1] == 'Y' end
-        privs.collect do |p| symbolize(p[0].downcase) end
+        privs.collect{|p| p[0].downcase.intern }
       end
     end
   end

lib/puppet/type/mysql_grant.rb

@@ -43,7 +43,7 @@ Puppet::Type.newtype(:mysql_grant) do
   newproperty(:privileges, :array_matching => :all) do
     desc "The privileges the user should have. The possible values are implementation dependent."
     munge do |v|
-      symbolize(v)
+      v.intern
     end
 
     def should_to_s(newvalue = @should)