I have the problem, that i use the gentoo-dev-sources-2.6.9-r1 I have a usb-dvdwriter. It works fine. But if i shut down the USB-burner the kernel crashed. With the 2.6.7 dev-sources there was no problem. Reproducible: Couldn't Reproduce Steps to Reproduce: 1. Changed the kernel scsi and usb settings 2. Tried 2.6.7 kernel 3. Actual Results: With 2.6.7 kernel there was no problem.
Upstream issue, please file this at bugzilla.kernel.org