Problem #1 — causes huge increase in CPU load on web servers
Problem #2 — completely kills THE ENTIRE SITE when you DISABLE it because serialized LUDependency objects in the message cache can’t be reinstantiated.
Sigh… Why can’t life be easy :)
Update 2009-09-23 16:30: Roan is starting work on replacing the database storage layer with a flat-file which should be more efficient for our use case.
Brion Vibber, Lead Software Architect