Why this window? nxpcdmn.exe

After i´ve upgraded clients from version 5.010 to version 6.5 i sometimes got a window that says something about nxpcdmn.exe.

Why is this happening and how do i fix it/get rid of it?

I also experience after i´ve started the client there is a “hanging” for a few seconds then you can work properly again.

At this point you can´t do nothing, not open your mailbox or calender etc.

Is there someone who have an answer to my problem/s pleas let me know.

/Fredrik