Version: (using KDE 4.2.85) Installed from: SuSE RPMs The pager plasmoid contains unnecessary spacing (padding), as shown on screenshot. It breaks panel layouts too.
Created attachment 33941 [details] Screnshot of pager with padding.
Created attachment 35050 [details] Pager wrong size
Confirmed still in 4.3 RC3, and it happens for both vertical and horizontal panels.
on the desktop, if you ask for 3 rows in the pager it will give you 3 rows, but will keep the aspect ratio. ergo the padding. as for in-panel missalignments a patch went in a few days back that addresses this.