Sorry if that's not a good place for this info, but i didn't know which one would be better.
I know that many people have this same problem with the re-login SuperKaramba 0.34 bug (themes after re-login are changing their's positions on the desktop). I read about this problem in many places (such as newsgroups and boards) in looking of solution and it would be difficult to share with it in each of those places. That's why i'm writing it here - where every superkaramba user looks :)
The main problem was that i couldn't set superkaramba in ~/.kde/Autostart because it was automaticly saved in kde session when it was being closed and then automaticly recovered when starting kde. So if SK was in Autostart, and wasn't closed manualy by me before closing KDE, then after next KDE start it was opened twice (1. because of Autostart, 2. because of the auto-save and auto-recover of session).
This auto-recover was the worst thing, cause there was a well-known bug (everything was great when i closed SuperKaramba before closing KDE, and when it was started from Autostart only, but it wasn't handy to close SuperKaramba before each exit).
Now i found the solution which lies in the Control Centre (i don't know exacly names in english language version. I mean this centre where "LookNFeel" menu lies too).
In this centre you've got to find a menu called "Components", and something like "Sessions' menager" into it. On the screenshot you can see how should it look.
In the dialog field write down "superkaramba" (as on the screenshot). You can write down also some other applications after a colon ( : ) if you want.
That means that superkaramba will be ignored in saving the KDE session when exit. So it won't be recovered when you start KDE again!
Now you only have to do a file in your ~/.kde/Autostart directory (the name of the file isn't important). This file should look like that:
Exec=superkaramba /path/to/your/theme/file.theme /path/to/some/other/theme/file2.theme
(Only a space, gap, or how you call it between "superkaramba" and path to the .theme file! Only a gap too between the .theme file no. 1 and path to the other one!). After the "superkaramba" word you can write as many paths to the themes as you wish.
For me everything now works perfect.
Ok, that's all, sorry for my not-prefect english and write in comments if you don't understand something (but i'm not any linux-guru so don't expect every help from me).