I prepared a package that should fix this encoding issue, the source package can be found at
http://mentors.debian.net/cgi-bin/sponsor-pkglist?action=details;package=osmo a binary package for i386 is at http://www.ephys.de/down/osmo_0.2.2-1lenny0_i386.deb Jocelyn, could you please let me know if this package works fine for you and fixes this problem? Thanks!
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