Most likely just a software screwup with your workbench install. SysInfo just reports it's best guess of what it sees. Wasn't there another thread about this happening around here, recently?
Yeah, there was. I don't remember if it was solved though.
Check your setpatch version.
Check your monitor driver version. (and make sure it's compatible with AGA, and make sure it's compatible with the version of Workbench you're running, and make sure it's compatible with your setpatch...)
Make sure you don't have an L:system-configuration
I second that. Although it's Devs:system-configuration, not L:
