I use the latest CVS version of krusader, glibc 2.5, Qt 3.3.6-r5 and KDE 3.5.5. When I search for a text in a file krusader crashes (with LC_ALL=de_DE). The krusader team say it is a bug in Qt, so I reported it here. For more (backtrace, ...) see the URL.
*** Bug 158668 has been marked as a duplicate of this bug. ***
You need to file a report with Trolltech, the makers of Qt. Email it to qt-bugs@trolltech.com