Version:            (using KDE 4.3.3)
Compiler:          gcc (GCC) 4.2.1 20070719  [FreeBSD]
 
OS:                FreeBSD
Installed from:    FreeBSD Ports

I have a small panel at the top centre of the screen that was the applications I use regularly.  plasma decides it likes rearranging the icons every time it starts.  I can move the icons back into place but on next boot they are rearranged.  

I've saved a plasma-desktop-appletsrc (that had the proper ordering) and restored it before KDE started but plasma still rearranges it.  

The snippet from plasma-desktop-appletsrc that has the panel with the layout I want:

[Containments][10]
activity=
desktop=-1
formfactor=2
geometry=0,-96,204,30
immutability=1
location=3
plugin=panel
screen=0
zvalue=150

[Containments][10][Applets][13]
geometry=37,0,29,29
immutability=1
plugin=icon
zvalue=53

[Containments][10][Applets][13][Configuration]
LastFreeSize=29,29
Url=file:///usr/local/share/applications/kde4/kate.desktop

[Containments][10][Applets][14]
geometry=70,0,29,29
immutability=1
plugin=icon
zvalue=73

[Containments][10][Applets][14][Configuration]
LastFreeSize=29,29
Url=file:///usr/local/share/applications/kde4/kdesvn.desktop

[Containments][10][Applets][15]
geometry=136,0,29,29
immutability=1
plugin=icon
zvalue=72

[Containments][10][Applets][15][Configuration]
LastFreeSize=29,29
Url=file:///usr/local/share/applications/virtualbox.desktop

[Containments][10][Applets][16]
geometry=103,0,29,29
immutability=1
plugin=icon
zvalue=63

[Containments][10][Applets][16][Configuration]
LastFreeSize=29,29
Url=file:///usr/local/share/applications/kde4/KMail.desktop

[Containments][10][Applets][17]
geometry=4,0,29,29
immutability=1
plugin=icon
zvalue=49

[Containments][10][Applets][17][Configuration]
LastFreeSize=29,29
Url=file:///usr/local/share/applications/kde4/dolphin.desktop

[Containments][10][Applets][40]
geometry=169,0,29,29
immutability=1
plugin=icon
zvalue=70

[Containments][10][Applets][40][Configuration]
LastFreeSize=29,29
Url=file:///usr/local/share/applications/kde4/rekonq.desktop

[Containments][10][Configuration]
maximumSize=1280,30
minimumSize=204,30

And the diff with the plasma-desktop-appletsrc that plasma reorganised:
--- plasma-desktop-appletsrc~   2009-11-19 10:18:35.000000000 +0200
+++ plasma-desktop-appletsrc    2009-11-19 10:30:27.000000000 +0200
@@ -52,7 +52,7 @@
 Url=file:///usr/local/share/applications/kde4/kate.desktop

 [Containments][10][Applets][14]
-geometry=70,0,29,29
+geometry=169,0,29,29
 immutability=1
 plugin=icon
 zvalue=73
@@ -72,7 +72,7 @@
 Url=file:///usr/local/share/applications/virtualbox.desktop

 [Containments][10][Applets][16]
-geometry=103,0,29,29
+geometry=70,0,29,29
 immutability=1
 plugin=icon
 zvalue=63
@@ -92,7 +92,7 @@
 Url=file:///usr/local/share/applications/kde4/dolphin.desktop

 [Containments][10][Applets][40]
-geometry=169,0,29,29
+geometry=103,0,29,29
 immutability=1
 plugin=icon
 zvalue=70
((removed changes pertaining to [Containments][29])).

This problem happens consistently.