From debian arm forum:
Subject: Re: Is armel project alive?
There is probably some porting work to be done, before you can get
to xulrunner and the firefox/iceweasel etc. But the project is
going on, not just on armel-debs site. The new packages are arriving:
deb
http://ftp.gnuab.org/debian/ sid main
deb
http://ftp.gnuab.org/debian/ unreleased main
where "sid" is unmodified packages from, well, sid. unreleased
is includes packages patched for armel (currently attr and apt -
do not fail to install those instead of sid version!)
gnuab repository does not hold binary-all packages, for those
you need a a repository from a mirror close to you.
deb
http://ftp.fi.debian.org/debian dists/unstable/main/binary-arm/
Finally, you will want the original armel port repo.
deb
http://armel-debs.applieddata.net/debian/ sid main
Notice it will take a few weeks until gnuab repository will catch up
sid, until then it's going to be quite rough ride.