How I got Seamonkey (Iceape) to work

This worked for me, but it might not work for you. Please do not blame me if it does not. Use this at your own risk.

My Linux version

I am running Debian Lenny amd64 and kde desktop.

/etc/apt/sources.list

deb http://debian.lcs.mit.edu/debian/ lenny main contrib non-free
deb-src http://debian.lcs.mit.edu/debian/ lenny main contrib non-free

deb http://security.debian.org/ lenny/updates main contrib non-free
deb-src http://security.debian.org/ lenny/updates main contrib non-free

deb http://volatile.debian.org/debian-volatile lenny/volatile main contrib non-free
deb-src http://volatile.debian.org/debian-volatile lenny/volatile main contrib non-free

deb http://debian.lcs.mit.edu/debian/ testing  main contrib non-free
deb-src http://debian.lcs.mit.edu/debian/ testing main contrib non-free

deb http://debian.lcs.mit.edu/debian/ etch main contrib non-free
deb-src http://debian.lcs.mit.edu/debian/ etch main contrib non-free

deb http://debian.lcs.mit.edu/debian/ squeeze main contrib non-free
deb-src http://debian.lcs.mit.edu/debian/ squeeze main contrib non-free

deb http://security.debian.org/ etch/updates main contrib non-free
deb-src http://security.debian.org/ etch/updates main contrib non-free

deb http://debian.lcs.mit.edu/debian/ unstable main contrib non-free
deb-src http://debian.lcs.mit.edu/debian/ unstable main contrib non-free

/etc/apt/preferences

Package: *
Pin: release stable
Pin-Priority: 800

Package: *
Pin: release karmic
Pin-Priority: -1

Package: *
Pin: release testing
Pin-Priority: 300

Package: *
Pin: release unstable
Pin-Priority: 5

Package: *
Pin: release etch
Pin-Priority: 10

commands

aptitude update
aptitude -P --with-recommends  safe-upgrade
aptitude --verbose -P --with-recommends install iceape-browser/unstable

~/.mozilla/iceaperc

# which /dev/dsp wrapper to use
ICEAPE_DSP="none"
MOZ_DISABLE_PANGO=1

Without Pango disabled, iceape crashes when viewing http://www.whitehouse.gov/blog/