Windows 7: Windows live communications platform stopped working

I periodically receive this error with the following:


Problem signature:
Problem Event Name: WlcommZombieV1
Problem Signature 01: 15.4.3555.308
Problem Signature 02: Server_Detected
Problem Signature 03: CContactDb::Initialize
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1033


I don't mind it really since there appears to be no significant corollary negative ramfication. I guess I'm more curious than anything else as to the why and what?