Custom counters file view is out of memory - MSExchange Common Event ID 106

Hi,

We have a two node Exchange 2010 DAG configuration, with approx 60 databases split equally over the two nodes during normal operation. On one of the nodes we are receiving repeated errors in the event logs with source MSExchange Common and event ID 106. The text of the alert is generally along the lines of:

Performance counter updating error. Counter name is Number of Content Conversions Done, category name is MSExchange Search Indices. Optional code: 3. Exception: The exception thrown is : System.InvalidOperationException: Custom counters file view is out of memory.

at System.Diagnostics.SharedPerformanceCounter.CalculateMemory(Int32 oldOffset, Int32 totalSize, Int32& alignmentAdjustment)

at System.Diagnostics.SharedPerformanceCounter.CreateInstance(CategoryEntry* categoryPointer, Int32 instanceNameHashCode, String instanceName, PerformanceCounterInstanceLifetime lifetime)

at System.Diagnostics.SharedPerformanceCounter.GetCounter(String counterName, String instanceName, Boolean enableReuse, PerformanceCounterInstanceLifetime lifetime)

at System.Diagnostics.SharedPerformanceCounter..ctor(String catName, String counterName, String instanceName, PerformanceCounterInstanceLifetime lifetime)

at System.Diagnostics.PerformanceCounter.Initialize()

at System.Diagnostics.PerformanceCounter.get_RawValue()

at Microsoft.Exchange.Diagnostics.ExPerformanceCounter.set_RawValue(Int64 value)

Last worker process info : Last worker process info not available!