Quorum/Witness Disk Offline every 15 minutes error - Event ID 1069 - Event ID 1558

2 node active passive, 2008 failover cluster.  I keep getting the following error events:

The cluster service detected a problem with the witness resource. The witness resource will be failed over to another node within the cluster in an attempt to reestablish access to cluster configuration data. Event ID 1558

Cluster resource 'Cluster Disk 1' in clustered service or application 'Cluster Group' failed. Event ID 1069

However my quorum disk is online from what I can see.   One thing I did notice is, the Quorum disk no longer has any files in it. It is just a empty drive.

I also noticed these errors are being entered every 15 minutes exactly.

I monitored the Quorum disk and it is going offline momentarily every 15 minutes.

Experts Exchange Posts indicate this is known issue and waiting for microsoft to deliver SP2?  Really?

http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/Windows_Server_2008/Q_24751092.html

Any thoughts