[317161.235206] psmouse.c: GlidePoint at isa0060/serio1/input0 lost sync at byte 1
[317161.238426] psmouse.c: GlidePoint at isa0060/serio1/input0 - driver resynched.
[317202.482498] psmouse.c: GlidePoint at isa0060/serio1/input0 lost sync at byte 1
[317202.505149] psmouse.c: GlidePoint at isa0060/serio1/input0 - driver resynched.
Sorry, wrong messages :-)
[317161.235206] psmouse.c: GlidePoint at isa0060/ serio1/ input0 lost sync at byte 1 serio1/ input0 - driver resynched. serio1/ input0 lost sync at byte 1 serio1/ input0 - driver resynched.
[317161.238426] psmouse.c: GlidePoint at isa0060/
[317202.482498] psmouse.c: GlidePoint at isa0060/
[317202.505149] psmouse.c: GlidePoint at isa0060/
rmmoding and modprobing the driver fixes it.