Columns Kontact/Kmail

Hi there,

every time I opened kontact the columns( hope this is the right english word 
for "Spalten") in Kmail are displaced to left, so I have to set the right 
amplitude manually. After restart kontact the problem is there again, it does 
not remember the right amplitude - when I just start only Kmail the columns 
have the right amplitude.
Can anybody confirm this or just have a workaround?

Thanx in advance

Wolf