How can I change jerky window movement on 6.5?

More information please. What are the specs of your system?
Processor speed / RAM installed / Video chipset etc.

Most often jerky window movement indicates the wrong video driver is installed - but there are other possibilities.

If you don't know what video chipset you have, run lspci from a Konsole window & paste that in to a reply. Then maybe someone will be able to help.

thanks for the reply. This is same monitor used with 3.4.3 on same machine.

root@1[bill]# lspci
0000:00:00.0 Host bridge: VIA Technologies, Inc. K8M800 Host Bridge
0000:00:00.1 Host bridge: VIA Technologies, Inc. K8M800 Host Bridge
0000:00:00.2 Host bridge: VIA Technologies, Inc. K8M800 Host Bridge
0000:00:00.3 Host bridge: VIA Technologies, Inc. K8M800 Host Bridge
0000:00:00.4 Host bridge: VIA Technologies, Inc. K8M800 Host Bridge
0000:00:00.7 Host bridge: VIA Technologies, Inc. K8M800 Host Bridge
0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI bridge [K8T800/K8T890 South]
0000:00:09.0 Communication controller: Conexant: Unknown device 2f30 (rev 01)
0000:00:0f.0 IDE interface: VIA Technologies, Inc. VIA VT6420 SATA RAID Controller (rev 80)
0000:00:0f.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
0000:00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
0000:00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
0000:00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
0000:00:10.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
0000:00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86)
0000:00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge [KT600/K8T800/K8T890 South]
0000:00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 60)
0000:00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 78)
0000:00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
0000:00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
0000:00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
0000:00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
0000:01:00.0 VGA compatible controller: VIA Technologies, Inc. S3 Unichrome Pro VGA Adapter (rev 01)

You are probably running with the vesa video driver. The via driver is a better choice.

Open your /etc/X11/xorg.conf file as root (easiest way is probably to use "File Manager - Super User Mode", & browse to that location).
In that file look for Section "Device". If the driver there is not via change it to via. Here's an example section from someone else who has it working:

Section "Device"
Identifier "VIA Technologies, Inc. VT8378 [S3 UniChrome] Integrated Video"
Driver "via"
Option "EnableAGPDMA" "true"
EndSection

Once you've changed the file, save it and either restart KDE (<ctrl><alt><bksp>) or reboot. You should see an improvement.

The OpenChrome 3D drivers from VIA would help more but they are somewhat more trouble to install, and I haven't done it myself. See: http://www.mepis.org/node/13367

As suggested I looked at /etc/X11/xorg.conf and found that it is exactly the same on 3.4.3 as in 6.5
I tried anyway the section change to use via and couldnt get screens to work, even startx. Was able to copy back the original which I had saved.

Examples of my complaint:
Bring up the "home" folder, then drag it around the screen. Icons should move smoothly within the "home" box, not constantly refreshed.
Bring up an item in Konqueror. The report or whatever should move smoothly, not constantly "refreshed'.

Maybe I should say there is annoying scrolling inside the window?