Hey jiassic and chkohlruss

the errors that you posted are different,
jiassic may be drive related
he is showing these:
2009/08/31 00:03:01|[<ffffffff8069c592>] ? __down_read+0x12/0xa0
2009/08/31 00:03:01|[<ffffffff804256c8>] ? __down_write_trylock+0x48/0x60
2009/08/31 00:03:01|[<ffffffff804256c8>] ? __down_write_trylock+0x48/0x60
2009/08/31 00:03:01|[<ffffffffa001d663>] ? di_read_unlock+0x73/0x130 [aufs]
2009/08/31 00:03:01|[<ffffffffa001c497>] ? h_d_revalidate+0x4c7/0x6b0 [aufs]
2009/08/31 00:03:01|[<ffffffff8069c592>] ? __down_read+0x12/0xa0
2009/08/31 00:03:01|[<ffffffff804256c8>] ? __down_write_trylock+0x48/0x60
2009/08/31 00:03:01|[<ffffffff804256c8>] ? __down_write_trylock+0x48/0x60
2009/08/31 00:03:01|[<ffffffff80425701>] ? __up_read+0x21/0xb0
2009/08/31 00:03:01|[<ffffffffa001d663>] ? di_read_unlock+0x73/0x130 [aufs]

while chkohlruss
you have different errors
2009/09/08 06:19:54 kernel:[<ffffffff80237390>] ? put_files_struct+0x70/0xc0

2009/09/08 06:19:54 kernel:[<ffffffff80237a9b>] ? do_exit+0x17b/0x8b0

2009/09/08 06:19:54 kernel:[<ffffffff80238244>] ? do_group_exit+0x34/0xa0

2009/09/08 06:19:54 kernel:[<ffffffff80228282>] ? ia32_sysret+0x0/0xa

Best is to send the entire logs to suport to be sure.
Did you guys hear back from them?