Can you test the v3.1 kernel and see if the bug exists there?
v3.1: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.1-oneiric/
If it does not exist there, can you test v3.2-rc2:
v3.2-rc1: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2-rc1-oneiric/
Can you test the v3.1 kernel and see if the bug exists there?
v3.1: http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v3.1-oneiric/
If it does not exist there, can you test v3.2-rc2:
v3.2-rc1: http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v3.2-rc1- oneiric/