This is working fine for me with 1.1.12 on intrepid & hardy.
What do you have in /usr/lib/seamonkey/dictionaries ?
This should be a link to /usr/share/myspell/dicts and then, it should contain (at least) all the myspell dicts installed on your system.
$ dpkg -l | grep myspell
ii myspell-en-gb 1:2.4.0~m240-1ubuntu1 English_british dictionary for myspell
ii myspell-en-us 1:2.4.0~m240-1ubuntu1 English_american dictionary for myspell
ii myspell-en-za 1:2.4.0~m240-1ubuntu1 English_shouthafrican dictionary for myspell
ii myspell-fr-gut 1:1.0-23ubuntu1 The French dictionary for myspell (GUTenberg version)
This is working fine for me with 1.1.12 on intrepid & hardy.
What do you have in /usr/lib/ seamonkey/ dictionaries ? myspell/ dicts and then, it should contain (at least) all the myspell dicts installed on your system.
This should be a link to /usr/share/
$ dpkg -l | grep myspell m240-1ubuntu1 English_british dictionary for myspell m240-1ubuntu1 English_american dictionary for myspell m240-1ubuntu1 English_ shouthafrican dictionary for myspell
ii myspell-en-gb 1:2.4.0~
ii myspell-en-us 1:2.4.0~
ii myspell-en-za 1:2.4.0~
ii myspell-fr-gut 1:1.0-23ubuntu1 The French dictionary for myspell (GUTenberg version)