Walter, you might want to confirm whether you're able to reproduce this bug on your hardware using the latest images, to save people going on a wild goose chase thinking this is a regression since 20121012 when it's possible it's not a regression but is instead hardware-specific.
In particular, there is no difference in the version of kernel installed by the the 20121012 and 20121012.2 powerpc lubuntu images; so if this is a kernel bug, it's a bug that was already present before the 20121012.2 image.
Walter, you might want to confirm whether you're able to reproduce this bug on your hardware using the latest images, to save people going on a wild goose chase thinking this is a regression since 20121012 when it's possible it's not a regression but is instead hardware-specific.
In particular, there is no difference in the version of kernel installed by the the 20121012 and 20121012.2 powerpc lubuntu images; so if this is a kernel bug, it's a bug that was already present before the 20121012.2 image.