Same happens here.
On a dell E6500 with kubuntu quantal, trying 3.8 kernels from the mainline ppa.
When connecting to the internet via a mobile phone using bluetooth and DUN, on disconnection the kernel panics.
This with all the 3.8.x kernels.
Happens every time.
3.7.x is latest working kernel.
Same happens here.
On a dell E6500 with kubuntu quantal, trying 3.8 kernels from the mainline ppa.
When connecting to the internet via a mobile phone using bluetooth and DUN, on disconnection the kernel panics.
This with all the 3.8.x kernels.
Happens every time.
3.7.x is latest working kernel.