I just kicked up 2.6.26-git2 on an AMD x86_64 box and ran into the following on boot. The system is still up and seems to be ok. bz2'ed config attached. Let me know if additional info is needed. thanks -john i2c-adapter i2c-0: PCA9556 configuration failed kobject (ffffffff81be87e0): tried to init an initialized object, something is se riously wrong. Pid: 1, comm: swapper Not tainted 2.6.26-git2john #1 Call Trace: [] kobject_init+0x7a/0x80 [] device_initialize+0x2d/0xc0 [] device_register+0x11/0x20 [] i2c_register_adapter+0xae/0x1a0 [] i2c_add_adapter+0x96/0xb0 [] amd756_s4882_init+0x27f/0x330 [] ? sysfs_create_file+0x2b/0x40 [] ? driver_create_file+0x17/0x20 [] ? __pci_register_driver+0x74/0xa0 [] ? amd756_s4882_init+0x0/0x330 [] kernel_init+0x123/0x300 [] ? _spin_unlock_irq+0x11/0x40 [] child_rip+0xa/0x11 [] ? kernel_init+0x0/0x300 [] ? child_rip+0x0/0x11 i2c-parport-light: adapter type unspecified