Comment 2 for bug 555902

svn revision #2812 fixes the problem,

from the changelog:
fix for bug #555902, update the URL used to retrieve the
list of public servers in jabber/Jabber.tcl, and use package
xml instead of qdxml to parse the xml file.

this must have been broken within qdxml since a longer time... svn log tells me the last change to it was done by matben in summer 2007