Template:FAQ:Agent 41

This means that the agent wasn't able to locate one of the kernel structures it was looking for. This may or may not be important - some systems provide alternative mechanisms for obtaining the necessary information - Solaris, for example, can produce a whole slew of such messages, but still provide the correct information.

This error only occurs if you have used the flag '--enable-debugging' as part of the initial configuration. Reconfigure the agent with '--disable-debugging' and these messages will disappear. (It won't fix the underlying problem, but at least you won't be nagged about it).