Comment 9 for bug 541856

I have found out that this crash happens when the global LC_CTYPE variable is set to "tr_TR.utf8". I will also report this to KDE bugs. However, this bug may be Kubuntu specific. It is clear that nepomuk/soprano does not like tr_TR.utf8 charset. Nepomuk/Strigi/Akonadi runs fine with the below locale settings (this is the workaround I use):

LANG=tr_TR.utf8
LANGUAGE=tr_TR
LC_CTYPE=en_GB.utf8
LC_NUMERIC="tr_TR.utf8"
LC_TIME="tr_TR.utf8"
LC_COLLATE="tr_TR.utf8"
LC_MONETARY="tr_TR.utf8"
LC_MESSAGES="tr_TR.utf8"
LC_PAPER="tr_TR.utf8"
LC_NAME="tr_TR.utf8"
LC_ADDRESS="tr_TR.utf8"
LC_TELEPHONE="tr_TR.utf8"
LC_MEASUREMENT="tr_TR.utf8"
LC_IDENTIFICATION="tr_TR.utf8"
LC_ALL=

If LC_CTYPE is set to "tr_TR.utf8" then soprano crashes (On KDE 4.4+ Lucid) and also Dolphin won't open (on KDE 4.5.1 Maverick). So this is definitely a character set/soprano related problem