bad wsmouse event

[raymond.meyer%rambler.ru@localhost]

Hi, I sometimes experience Xserver crashes on Ultra10 with Creator3D 
framebuffer, maybe it's something to do with sunffb driver or something else. 
The screen gets garbled and frozen, this always happens due to some action, 
like moving a mouse (I use a USB mouse and keyboard).

I looked at my XFree86.log file and noticed the following lines

WW) Mouse0: bad wsmouse event type=1792
(WW) Mouse0: bad wsmouse event type=1536
(WW) Mouse0: bad wsmouse event type=1792
(WW) Mouse0: bad wsmouse event type=1536
...
(WW) Mouse0: bad wsmouse event type=458751
(WW) Mouse0: bad wsmouse event type=458751
(WW) Mouse0: bad wsmouse event type=458751
(WW) Mouse0: bad wsmouse event type=458751
...
(WW) Mouse0: bad wsmouse event type=117440511
(WW) Mouse0: bad wsmouse event type=117440511
(WW) Mouse0: bad wsmouse event type=117440511
(WW) Mouse0: bad wsmouse event type=117440512

What does the above message mean and could this be related to Xserver crashes?

[root@ultra10] uname -a
NetBSD ultra10 4.99.63 NetBSD 4.99.63 (GENERIC_SUN4U) #0: Tue May 27 15:54:18 
BST 2008  root@ultra10:/opt/obj.sparc/sys/arch/sparc/compile/GENERIC_SUN4U 
sparc64