[Lazarus] screen.cursor := crHourglass and Linux

[John Landmesser]

i googled for a problem with a lazarus app running on linux: no 
Hourglass cursor showing!

do i really need allways
screen.cursor := crHouglass;
followed by
Application.Processmessages;

Linux is:
infobash -v1
Host/Kernel/OS "siduxhome" running Linux 2.6.38-2.slh.7-aptosid-686 i686 
[ sidux 2007-01 - Χάος (200702210759) ]
CPU Info 2x Intel Core2 Duo E8500 @ clocked at [ 3335.000 MHz ]
Videocard nVidia G92 [GeForce 8800 GT] X.Org 1.9.5 [ 1280x1024 at 51.0hz ]
Processes 151 | Uptime 41min | Memory 609.2/3293.8MB | HDD Size 1250GB 
(19%used) | GLX Renderer GeForce 8800 GT/PCI/SSE2 | GLX Version 3.3.0 
NVIDIA 270.30 | Client Shell | Infobash v3.35