Well, if it isn’t one thing, it has to be another…. I’ve been suffering with these errors for a while, and I think I just stumbled upon the trigger…

3/9/10 12:37:56 PM [0x0-0x206e06c].com.ranchero.NetNewsWire[97172] Tue Mar  9 12:37:56 dhcp105-37 NetNewsWire[97172] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds: NULL window

Here’s the thread I just found kCGErrorIllegalArgument errors with Camino 2.0.1.  And it makes sense…

Under 10.6.2 it is possible that hiding a window that contains flash content will cause those errors to appear, until the application is restarted….