Xen causing SuperKaramba to bug....

Since I installed Xen for virtualization, I can’t get any transparency. Superkaramba says to enable desktop effects but they are enabled. Trasnparency is enabled. Also, how can I make the kicker(taskbar) transparent? I run KDE 4.1

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the only whay in 4.1 to make the task bar tranparent is to pick a them with a transparent taskbar