I seem to have a similar problem. When running from xtrm I get :-

/home/user # abiword
abiword: error while loading shared libraries: libSM.so.6: cannot open shared object file: No such file or directory

/home/user # apt-get intall libSM
Reading package lists... Done
Building dependency tree... Done
E: Couldn't find package libSM

I get the same response when substituting libglade. This has been tried both with and without a trailing / on :-
repoository.maemo.org
mistral
free non-free

any help would be appreciated.