I have a problem with Lync 2010 on Windows 7 SP1 with Office 2010. Excahnge 2007
It is reproducible across other machines in the organisation on both Outlook 2007 and 2010.
The problem is as follows:
Create a contact with an email address and phone number in your personal contacts in Outlook
Then switch to Lync and search for the contact and add them
As you can see the contact is added with all information present.
Logout of Lync and back in, Lync will then try to sync contacts with Outlook (shown by updating…)
After a while the sync finishes but the contacts do not have the details left in them to be able to phone the contact. Sort of defeats the point of adding it in the first place.