Hello, I searched for this before posting but may have had bad search terms. Please see downstream bug report here: http://bugs.gentoo.org/show_bug.cgi?id=265256 Some websites have the ability to cause a crash in the panel and apparently xfdesktop if they have unicode chars in the name. This is one such page: http://blog.oup.com/2009/03/science-fiction/ I have verified the crash in 4.6.0 and 4.6.1. Let me know if you need anything else. Thanks.
Works fine here, try upgrading to a newer libwnck.