Installation with the SeaMonkey Installer
To install SeaMonkey by downloading the SeaMonkey installer, follow these steps:
1. Create a directory named seamonkey1.1 (mkdir seamonkey1.1) and change to that directory (cd seamonkey1.1).
2. Click the link to download the installer file (called seamonkey-1.1.en-US.linux-i686.installer.tar.gz).
3. Change to the SeaMonkey directory (cd seamonkey1.1) and decompress the archive with the following command:
gunzip -dc sea*.tar.gz | tar -xvf -
(This places the installer in a subdirectory of SeaMonkey named seamonkey-installer.)
4. Change to the seamonkey-installer directory (cd seamonkey-installer) and run the installer with the ./seamonkey-installer command.
5. Follow the instructions in the install wizard for installing SeaMonkey.
6. To start SeaMonkey, change to the directory where you installed it and run the ./seamonkey command.
http://www.mozilla.org/projects/seam...ion.html#linux
Ubuntu doesn't have a Seamonkey package? It should since Debian does.