+++ This bug was initially created as a clone of Bug #229052 +++
I cloned this bug because the original bug was closed and marked as fixed without fixing the actual bug (which is related to non-qt applications and the fix only fixed it when closing qt apps)

Version:            (using KDE 4.4.0)
OS:                Linux

This bug seems to affect only non-Qt apps.

Steps to reproduce:
1. Open a non-Qt app (I tried Firefox and OpenOffice).
2. Select text and copy it.
3. Close the app and try to past the text into another app.

Weird thing is: The text appears in Klipper's tray menu. I have to select it first to be able to paste it again.
I tried enabling and disabling the "Prevent empty clipboard" option, but without any success.

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And then the xsel is used instead of the xclipboard content when an application
closes and the last thing I have done is not copying but selecting (so both
buffers have the same content after closing the app instead of different as it
should be).
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And for example when I open firefox, copy text, select some other text it is
possible to insert both buffers independent in kate. But when I close firefox
then both buffers are empty.

I've use klipper 0.9.7 with the patch included from bug 229052