Der er netop frigivet en opdatering til Lync klienten i både 32 og 64 bit, som er klar på Microsoft download:

Lync 2010 Hotfix KB 2540951 (64 bit)

Download:      
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=0fd94d10-fe84-4c84-a387-91afe24fb5b8

TechNet:
http://support.microsoft.com/?kbid=2540951

 

Lync 2010 Hotfix KB 2540951 (32 bit)

Download:
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=f27546af-c390-4ee8-a55e-fd56848c2394

TechNet:
http://support.microsoft.com/?kbid=2540951