This is something I have noticed in MOM 2005, and seems to be the same in the conversion MP for OpsMgr 2007. (Version 6.0.5000.0 of the Microsoft.Windows.Server.Printserver (Converted) MP). When you import this MP, it will fill the Operational and reporting databases with performance data about print jobs and queues, if you have a large number of print servers/queues in your environment.
If reporting on this perf data is not critical to your environment, you should disable these rules:
