Hi
At Linaro we are working on cross toolchain for ARM/EABI target (known as 'armel' in Debian and Ubuntu based systems). We base on work made by Debian and Ubuntu toolchain maintainers.
Latest version of cross toolchains are available in prebuilt form on:
http://people.canonical.com/~hrw/ubuntu-maverick-armel-cross-compilers/
I provide there gcc-4.4, gcc-4.5, binutils and eglibc packages. Use them, report bugs to Ubuntu launchpad.
Regards,