From
http://www.villeaho.com/2011/02/12/n...nd-the-scenes/

Which proposes 2 scenerios of how and why this happened one commenter with username A.T. makes an interesting point,

"oh please… since spring 2008, 100% MS-owned-subsidiary IT provider pushed into IT of Nokia at weird circumstances (extremely short zero money supply exactly at time to renegotiate major IT contracts) and soon almost exclusively maintains email/calendar/etc … Lotus Notes infrastructure (which could keep MS-owned IT unable to read critical data) is phased out. PGP is removed and substituted by S/MIME solution by MS. So, which scenario you choose, eh?"