Wrong version of libc6 when installing mainline kernel

[mercado]

I am attempting to install the 2.6.27 mainline kernel as per the
instructions at https://wiki.ubuntu.com/KernelTeam/MainlineBuilds.

However, when I go to install the
linux-headers-2.6.27-02062710-generic package using dpkg, I get the
following error message:

dpkg: dependency problems prevent configuration of
linux-headers-2.6.27-02062710-generic:
 linux-headers-2.6.27-02062710-generic depends on libc6 (>=2.8); however:
  Version of libc6 on system is 2.8~20080505-0ubuntu9.

Can anyone help me with this error?  I'm assuming that my version of
libc6 is adequate, and what I need is for dpkg to recognize that it
meets the dependency requirement.

Thanks in advance.