Version: 0.11.3 (using KDE KDE 3.5.4)
Installed from: Debian stable Packages
connection will be refused by server: client too old
Additional note: This happens since the weekend before beginning of August.
*** This bug has been marked as a duplicate of 130630 ***
It happened to me 1st Jun 2008 for first time, openSUSE 11.
happened to me too - today, Archlinux with kdemod kde-distribution