I haven’t seen these all in one place yet so I figured I’d post them. Happy patching!
| Product | KB |
| Lync 2010 (64bit) | 2467763 |
| Lync 2010 (32bit) | 2467763 |
| Lync Server 2010 | 2493736 |
| Lync 2010 Phone Edition (Tanjay) | 2493722 |
| Lync 2010 Phone Edition (Aries-Aastra) | 2493724 |
| Lync 2010 Phone Edition (Aries-Polycom) | 2493723 |
| Lync 2010 Attendee (Admin Install) | 2467762 |
| Lync 2010 Attendee (User mode install) | 2467761 |
| Lync 2010 Attendant (32 & 64 bit are a combined patch) | 2467760 |
| Lync 2010 Group Chat Client | 2467765 |
| Lync 2010 Group Chat Admin | 2467764 |
The Lync Guy's Blog 
For the server roles you can also use this cumulative patch which updates the core components.
http://support.microsoft.com/kb/2467775
Kevin, thanks a lot for your post!
Could you please correct the link address for LS 2010 update – now it points to article 2467763, instead of 2493736
Updated, thanks for catching that one for me!
-kp
I haven’t found any info of what the updates actually fix, except on the client update.