Backport: fix kolab issue 3480
Backport:
fix kolab issue 3480

svn path=/branches/KDE/4.2/kdepim/; revision=947709

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi