According to this post http://www.jboss.com/index.html?module=bb&op=viewtopic&t=112564&postdays=0&postorder=asc&start=10 I tried to implement pagination for my dataScroller:

...
<rich:dataTable
 binding="#{mse.mseItemTable}"
 rows="#{mse.numberOfVisibleRows}"
 id="mse_mseItems"
 value="#{mse.mseItems}"
 var="item"
>
....
</rich:dataTable>
<rich:datascroller
 ajaxSingle="false"
 binding="#{mse.dataScroller}"
 id="mse_dsMseItems"
 for="mse_mseItems"
/>
...

Heres the relevant part of my backing bean:

public final DataModel getMseItems() {
 ArrayList<Element> elements = this.getElements();
 Integer fromItem = this.mseItemTable.getFirst();
 Integer toItem = null;
 // check if first row plus number of visible rows is
 // smaller then availiable data sets
 if (this.mseItemTable.getFirst() + this.numberOfVisibleRows <
 mseItemsOfCurrentGeschaeftsstelle.size()) {
 toItem = this.mseItemTable.getFirst()
 + this.numberOfVisibleRows;
 } else{
 toItem = mseItemsOfCurrentGeschaeftsstelle.size();
 }
 PagedListDataModel dataModel =
 new PagedListDataModel(
 this.getElements.subList(fromItem, toItem),
 this.getElements.size(),
 this.numberOfVisibleRows
 );
 return dataModel;
}

This worked fine with version 3.0.1.
With the 3.1.0-version I have the problem that I can scroll only to page 2.
If I click to the next page, nothing happens.
I made a System.out.println(fromItem, toItem) with the following result (clicking on next page-Control of the dataScroller):

init:
0 to 10
0 to 10

first click:
0 to 10
10 to 20

second click:
0 to 10
10 to 20

third click:
0 to 10
10 to 20

fourth click:
0 to 10
10 to 20

fifth click:
10 to 20
20 to 30

sixth click:
10 to 20
20 to 30

seventh click:
0 to 10
10 to 20

As you can see, the fifth click works, but when I click some more times, it jumps back.
Does anybody has an idea why this strange behaviour occurs???