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xfce problems

I use xfce and until a few days ago my name, the clock and a
few other things were at the right of the top panel and the
app icon and the window icons in the current workspace were
at the left. All of a sudden everything slides over to the
left of the panel and changes size depending on how many
windows there are in the workspace.

Anybody know what I need to change to get the behavior back
to what it was, and I suppose more or less standard state?

Many TIA,