linuxdcpp and xchat2 unusable after KDE4 upgrade?

[Nenad Markovic <yapinm@gmail.com>]

Hi,
Im not sure this is somehow conected and it's very strange.
First, I've upgraded to KDE4 whren it was in experimental (3.96, 3.97
and 3.98SVN later on). Then my problems with linuxdcpp and xchat
started. i thought that they would fix when KDE4 is moved to unstable,
but this never happend.
Here what happens when linuxdcpp is started from konsole:

yapi@lan-0-30:~$ linuxdcpp
Loading: Hash database
Loading: Shared Files
Loading: Download Queue

(linuxdcpp:19171): Gtk-CRITICAL **: gtk_box_reorder_child: assertion
`GTK_IS_WIDGET (child)' failed
The program 'linuxdcpp' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
  (Details: serial 2111 error_code 8 request_code 2 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error()
function.)
yapi@lan-0-30:~$

xchat2 runs ok, until right mouse button is clicked for menu, then it's
same thing as with linuxdcpp:

yapi@lan-0-30:~$ xchat
The program 'xchat' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
  (Details: serial 49250 error_code 8 request_code 2 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error()
function.)
yapi@lan-0-30:~$

In gnome from unstable(2.20.2) this 2 apps run ok.
Please help? :)
TIA
Nenad