Version: (using KDE 4.2.2) OS: Linux Installed from: Mandriva RPMs I think this is the same as this bug (which has been closed as "REMIND" two years ago ??) https://bugs.kde.org/show_bug.cgi?id=92598 Some jabber clients see blank lines after my messages, other don't. This is espacially true when talking to a MUC (chatroom).
Gajim is one of the jabber client known to show these blank lines, if you want to reproduce it.
Do you have OTR plugin enabled? *** This bug has been marked as a duplicate of bug 189570 ***