Verified that kernel 2.6.38-15.60 fixes this for natty:
dpkg -I linux-image-2.6.38-15-generic_2.6.38-15.60_i386.deb
...
Description: Linux kernel image for version 2.6.38 on x86/x86_64
This package contains the Linux kernel image for version 2.6.38 on
x86/x86_64.
Verified that kernel 2.6.38-15.60 fixes this for natty:
dpkg -I linux-image- 2.6.38- 15-generic_ 2.6.38- 15.60_i386. deb
...
Description: Linux kernel image for version 2.6.38 on x86/x86_64
This package contains the Linux kernel image for version 2.6.38 on
x86/x86_64.
Tagging as verified for natty.